8.3.5 Summarize the importance of minerals, ores, and fossil fuels as Earth resources on the basis of their physical and chemical properties. Read the following to determine the difference between a mineral and a rock. A mineral is a natural, nonliving, solid crystal that makes up rocks. Minerals are naturally occurring pure substances. No matter how tiny of a piece of mineral you have it is identical to all other pieces of that same mineral. Minerals have a very orderly structure that is usually, but not always, seen as crystals. There are more than 3000 known minerals on Earth. Combinations of different minerals make up all the rocks on earth. Geologists tell minerals apart based on nine properties: color, luster, density, crystal form, cleavage (smooth, flat surface pattern when a mineral is broken), fracture (irregular pieces formed when broken), tenacity (toughness), hardness (ability to scratch or be scratched), and transparency. Minerals have many different uses that are usually dependent on their properties. Rocks are made up of more than one kind of mineral. Rocks belong to one of three groups: sedimentary, igneous or metamorphic. Any rock containing a metal or nonmetal together with impurities is called an ore. Pure metal is obtained by mining an ore and then removing the impurities by heat or by chemical processes. Ores are minerals that are mined because they contain useful metals or nonmetals. What is the difference between a Rock and a Mineral? MINERAL ROCK Activity: Name That Mineral (Classwork Grade) ORE 8.3.5 Summarize the importance of minerals, ores, and fossil fuels as Earth resources on the basis of their physical and chemical properties. The Earth is rich in ___________________________________________ that we use every day. Earth resources (minerals, ores, and fossil fuels) have properties that make them important and useful. The two types of properties are: ______________________________; for example, hardness, luster, color, texture, the way a mineral splits, or density __________________________________________; for example, the ability to burn, the reactivity to acids Three common Earth resources that have importance based on their properties are: ________________________________________________________________________ Minerals (building block of rocks) All rocks are a mixture of many different substances. The individual substances that make up rocks are called _________________________________. MINERALS ARE THE BUILDING BLOCKS OF ROCKS. THEY Are _______________________________ Ores (METALS & NONMETALS) Any rock containing a metal or nonmetal together with impurities is called an _____________________. Pure metal is obtained by mining an ore and then removing the impurities by heat or by chemical processes. ORES ARE Minerals that are mined because they contain useful ________________________________________________. NONRENEWABLE VS. RENEWABLE WHAT ARE NONRENEWABLE RESOURCES? Energy resources that cannot be replaced, or renewed, are called ________________________________________. Types of Nonrenewable Resources: ________________________________ Fossil fuels Natural fuels that come from the remains of living things are called ___________________________________. Fuels give off energy when they are _________________________. Facts: The world depends on _________________________. Energy is the ability to change. People use many different energy resources; however, they mainly use it to ___________________________ energy. Fossil Fuels: are _______________________________________ that form over millions of years from remains of dead plants and other organisms such as ______________________________. Fossil Fuels are used to make gasoline for cars, to heat homes, to generate electricity, to cook (natural gas) or heating oil, make plastic, and etc… THERE ARE 3 TYPES OF FOSSIL FUELS: 1. ___________________________________ 2. ___________________________________ 3. ___________________________________ TYPES OF FOSSIL FUELS 1. _____________________: a solid _____________________________________rock form from layers of ancient plant matter, most abundant fossil fuel, and is remove by coal mining - Is __________________________ because the sediments that make up coal consists of dead plants, shells, or animal skeletons. 2. ___________________________________: a liquid ________________________________ ( contain the elements hydrogen and carbon) that is used mostly for making heating oil, gasoline, and plastics - Is Organic 3.___________________________: - gaseous and is used mostly for heating and cooking Is Organic Oil and Natural gas are removed by extraction. First a narrow hole or well is drilled down through rock to the oil deposit. Equipment is put into the well to control the flow and the oil or gas is extracted or pumped. Important: Nonrenewable resources such as these exist in a fixed amount and can only be _____________________ by processes that take ____________________________ of years. If they are depleted, they are depleted for good. Conserving Fossil Fuels: Turning off lights, Make sure doors and windows are shut tight so heat won’t leak out, Run your air condition as little as possible, and Add insulation to help save energy ________________________________________________ Renewable Resources: Energy resources that can be renewed or replaced are called renewable resources. Examples OF RENEWABLE RESOURCES ALTERNATIVE ENERGY Problems with our energy sources and supply (i.e. pollution, foreign oil) have become an important conservational and political topics over the past 25 years. _____________________________________ sources such as wind, water, and solar have been investigated, but only a fraction of the U.S.’s energy comes from these alternate sources. Energy resources: A major natural resource that all Americans rely on is petroleum fuel (oil or natural gas). Petroleum is an earth material that forms within the Earth and can be burned to produce heat and electricity or made into gasoline. Other fuels are coal, uranium, and alternative energy (wind, tidal, solar). ACTIVITY: CREATE A GRAPHIC ORGANIZER DEPICTING THE DIFFENCE BETWEEN RENEWABLE AND NONRENEWABLE RESOURCES. PASTE THE PICTURES BELOW IN THE CORRECT AREA. NAME THAT MINERAL ANSWER KEY 1. 2. 3. 4. 5. QUARTZ FELDSPAR MICA TALC HOMOBLENDE What is the role of coal in the United States? The United States holds the world's largest estimated recoverable reserves of coal and is a net exporter of coal. In 2011, our nation's coal mines produced more than a billion short tons of coal, and more than 90% of this coal was used by U.S. power plants to generate electricity. While coal has been the largest source of electricity generation for over 60 years, its annual share of generation declined from 49% in 2007 to 42% in 2011 as some power producers switched to lower-priced natural gas. Coal is an Abundant U.S. Resource The United States is home to the largest estimated recoverable reserves of coal in the world. In fact, we have enough coal to last more than 200 years, based on current production levels. Coal is produced in 25 states spread across three coal-producing regions. In 2011, approximately 72% of production originated in five states: Wyoming, West Virginia, Kentucky, Pennsylvania, and Texas. Did You Know? In 2011, Wyoming produced 438 million short tons of coal, or 40% of the coal mined in the United States. West Virginia was the second largest producer, with 135 million short tons (12%). U.S. coal mines produce more coal than the nation consumes. Most of Our Coal is Used to Generate Electricity Over 90% of U.S. coal consumption is in the electric power sector. The United States has more than 1,400 coal-fired electricity generating units in operation at more than 600 plants across the country. Together, these power plants generate over 40% of the electricity produced in the United States and consume more than 900 million short tons of coal per year. Although coal-fired generation still holds the largest share among all sources of electricity, its use has declined since 2007 due to a combination of slow growth in electricity demand, strong price competition with natural gas, and increased use of renewable technologies. See related article — Today in Energy, July 6, 2012 While the share of our electricity generated from coal is expected to decrease by 2035, the amount of coal used to meet growing demand for power is expected to increase in the absence of new policies to limit or reduce emissions of carbon dioxide and other greenhouse gases. Revised emissions policies could significantly change the outlook for domestic coal use. See related article — Today in Energy, May 4, 2012 Besides its role in generating electricity, coal also has industrial applications in cement making and conversion to coke for the smelting of iron ore at blast furnaces to make steel. A small amount of coal is also burned to heat commercial, military, and institutional facilities, and an even smaller amount is used to heat homes. Coal is the largest source of U.S. electricity generation. The United States Exports Coal to Other Countries Between 2000 and 2010, about 5% of the coal produced in the United States, on average, was exported to other countries. Coal exports come in two forms: metallurgical coal, which can be used for steel production, and steam coal, which can be used for electricity generation. In 2011, U.S. coal exports climbed to 10% (the highest level in two decades), partly because flooding disrupted coal mining in Australia, which is normally the world's largest coal exporter. Metallurgical coal dominated U.S. coal exports in 2011 with Europe the largest importer, followed by Asia. See related article — Today in Energy, June 19, 2012 The United States also imports a small amount of coal; some power plants along the Gulf Coast and the Atlantic Coast find it cheaper to import coal by sea from South America than to have it transported from domestic coal mines. Coal Is a Relatively Inexpensive Fuel Although some natural gas plants are more efficient than coal plants at generating electricity, in the past the fuel cost of generating one kilowatthour of electricity from natural gas had typically been higher than that of coal. In 2009, coal began losing its price advantage over natural gas for electricity generation in some parts of the country, particularly in the eastern United States as a surge in natural gas production from domestic shale deposits (made possible by advances in drilling technologies) substantially reduced the price of natural gas. See related article — Today in Energy, July 13, 2012 Environmental Effects from Using Coal Coal is plentiful and fairly cheap relative to the cost of other sources of electricity, but its use produces several types of emissions that adversely affect the environment. Coal emits sulfur dioxide, nitrogen oxide, and heavy metals (such as mercury and arsenic) and acid gases (such as hydrogen chloride), which have been linked to acid rain, smog, and health issues. Coal also emits carbon dioxide, a greenhouse gas. In 2011, coal accounted for 34% of the energy-related carbon dioxide emissions in the United States. On the production-side, coal mining can have a negative impact on ecosystems and water quality, and alter landscapes and scenic views. Did You Know? Different types of coal have different characteristics including sulfur content, mercury content, and heat energy content. Heat content is used to group coal into four distinct categories, known as ranks: anthracite, bituminous, subbituminous, and lignite (generally in decreasing order of heat content). There are far more bituminous coal mines in the United States than the other ranks (over 90% of total mines), but subbituminous mines (located predominantly in Wyoming and Montana) produce more coal because their average size is much larger. Outlook for Future Coal Use The economics of burning coal may change if the U.S. adopts policies that restrict or otherwise control carbon dioxide emissions. For example, a cap-and-trade program to regulate carbon dioxide emissions would likely increase the cost of burning coal because of its carbon content, and thereby cause power companies to consider using less carbonintensive generating technologies such as nuclear, renewables, and natural gas. In March 2012, the U.S. Environmental Protection Agency proposed a new source performance standard for emissions of carbon dioxide (CO2) that would establish an output-based emission limit of 1,000 pounds of CO2 per megawatthour for new fossil-fuel-fired power plants. This emission limit would effectively require that new coal-fired generating units employ carbon capture and sequestration (CCS) technologies to reduce uncontrolled emissions of CO2 by approximately 50%. Researchers are working on ways to lower the costs and improve the efficiency of various CCS technologies with a goal of capturing approximately 90% of the carbon dioxide from coal plants before it is emitted into the atmosphere and then storing it below the Earth's surface. CCS would theoretically address much of coal's carbon dioxide emissions; however, substantial economic and technological hurdles remain. America can count on reliable and affordable electricity from coal for the foreseeable future. This will only happen if the Obama Administration stops its constant attacks on this abundant resource. In 2013, coal provided America with 40% of America’s electricity while providing countless direct and indirect jobs. Many communities around the country rely upon coal for their livelihoods. Needless to say, coal is an important part of America’s energy portfolio and an all of the above energy policy, that includes coal, is key to making sure the lights always stay on across America. Take a look at the 10 Reasons Why Coal is Here to Stay, courtesy of Matt Smith at Fuel Fix. 1. Coal has historically been, and is currently, the leading fuel in the US power generation mix. It is also expected to play a leading role for many years to come: Coal has benefits beyond its use as a source of power. In fact, only 85% of coal that is mined is used as a source of energy. Beyond its ability to generate electricity, coal and coal-byproducts can be used in the production and many various goods. Sometimes, the coal is used to create, super high temperature oven for processing materials, as is the case with most concretes. Other products that utilize carbon obtained from coal include plastics, chemicals, pharmaceuticals, and synthetic fibers. However, the majority of coal specified for production purposes is metallurgical (or coking) coal. This kind of coal is specially processed with iron ore in the production of steel. More than 700 million tons of coal mined per year is metallurgical coal that will later produce steel. Implications With oil and natural gas prices rising at alarming rates, the return of the US to a greater reliance on coal might seem inevitable. The nation is currently paying over $620 billion per year for petroleum imports, and this ongoing transfer of wealth abroad cannot help but have a substantial negative impact on the domestic economy. There are three ways to moderate that impact: reduce consumption of liquid fuels through conservation; produce more fuels domestically; or electrify transport, which will require more electricity. Coal could help with either of the latter two strategies. Given that the nation possesses so much coal, and that energy from coal is still relatively cheap, it would seem inevitable that strong arguments will be made for a dramatic increase in coal production to help solve the nation’s energy problems. Yet if most of the recent analyses cited here are correct, this strategy has a short shelf life. Within the planning horizon for any coal plant proposed today lie much higher coal prices and perhaps even resource scarcity. Assuming this higher demand scenario (from CTL, increased exports, and growing electricity consumption), by 2030 the nation’s dependence on coal will be much greater than is currently the case, and coal’s proportional contribution to the total US energy supply will have grown substantially. But at the same time, prices for coal are likely to have increased precipitously because of transport bottlenecks and higher transport costs (due to soaring diesel prices), falling production trends in many current producing regions, and the lack of suitable new coalfields. The interactions of high and rising coal prices with efforts to maximize output are hard to predict. The Importance of Natural Gas to the US Economy Natural gas is playing an increasingly important role in the US economy. Use of natural gas in the United States is growing as it is increasingly seen as a good alternative to oil. As the oil reserves in many parts of the world are being depleted, the availability of a viable alternative such as natural gas is becoming increasingly important. For the United States, the potential for natural gas to replace the role of oil in the economy is particularly important because it is one of the most oil dependent countries in the world. Natural gas is an attractive alternative for the US because it has the ability to produce natural gas domestically. The US has particularly large reserves of shale gas, which it has only recently been possible to exploit due to improvements in the technology. Increased exploitation of natural gas in the United States offers a means of reducing the country's dependence on oil and providing plenty of energy for use in people's homes and in industry. It will help the US economy to cope with the depletion of the world's oil reserves as peak oil production is reached and passed. It will also provide a secure source of energy that does not depend on sources of fossil fuels that lie abroad, often in unstable parts of the world such as the Middle East. The increasing use of natural gas in the US is also important for the country's economy because it can be produced domestically. This means that the natural gas industry can help to produce new jobs in the US and to make a significant input into the US economy. There are more than 6300 natural gas producers in the US, ranging from small companies to major energy producers. The US has over 530 processing plants for natural gas. These plants produce nearly 15 trillion cubic feet of natural gas a year, which is distributed through the natural gas pipeline network, which includes more than 300,000 miles of piping across the entire country. The US natural gas pipelines have the capacity to transport more than 148 billion cubic feet of gas every day, moving it from the regions where it is produced to the places where it is used. The natural gas sector in the United States is growing in importance and it is providing new opportunities for employment and technological advancement. The US has at least a hundred years worth of natural gas available for exploitation. The natural gas sector contributes approximately 4 million jobs and over 385 billion dollars to the US economy. Natural gas provides the United States with a source of energy that will be able to provide a replacement for some of the power that is currently obtained from oil. Increasing use of natural gas in the US will help to reduce the country's dependence on oil. Natural gas in the United States is transported around the country and distributed to its users through a network of natural gas pipelines. More information about the natural gas pipelines that are used to transport natural gas can be found on the entregapipeline.com website. Natural gas is undergoing a revolutionary transformation. Due to advances in drilling technology, vast amounts of the commodity have been unlocked. With a 100-year supply within the U.S. borders and under America’s control, natural gas is quickly replacing other fossil fuels as America’s energy source of choice. In just a few years, demand has risen appreciably and is expected to continue to do so for decades to come. Natural gas is environmentally friendly, relatively inexpensive and has wide application in American commerce. Demand drivers are far-reaching and include numerous industries and initiatives. Currently, natural gas is making headway as a replacement for coal in power generation. Captive truck fleets and buses are turning to natural gas for its environmental and cost advantages relative to gasoline and diesel. Even the maritime and railroad industries are exploring operating ships and locomotives using natural gas rather than diesel fuel. With abundant supplies available, America has the opportunity to be energy independent and become a net exporter of natural gas. Natural gas has enabled America to rethink its energy needs, and numerous changes sparked by technological advances across multiple industries are underway. We believe that we are currently in the early stages of a major energy transformation in the U.S. and that natural gas will play a primary role over the next several decades. Due to the growth in natural gas production, primarily from shale gas, the United States is benefitting from some of the lowest prices for natural gas in the world and faces the question of how to best use this resource. Different segments of the U.S. economy have different perspectives on the role natural gas can play. Suppliers, which have become the victims of their own production success, are facing low prices that are forecast to remain low. Some companies that have traditionally produced only natural gas have even turned their attention to oil in order to improve their financial situation. Smaller companies are having a difficult time continuing operations and larger companies, including international companies, have bought into many shale gas assets. Prices have remained low even as consumption has increased, in part, because producers have raised production to meet the demand and because companies have improved efficiency and extraction techniques. Some companies, many with large production operations, have applied for permits to export natural gas. This has raised concerns from consumers of natural gas that domestic prices will rise. The debate regarding exports is ongoing. Industries that consume natural gas have seen input costs drop, and some have heralded low natural gas prices as the impetus for a manufacturing revolution in the United States. Some companies have begun to make major investments to take advantage of the low natural gas prices, particularly in petrochemicals. Other companies are waiting to see if prices will remain low long enough to warrant major investments in new facilities. Meanwhile, the electric power sector has already seen a transition from coal-fired generation to natural gas. Low natural gas prices are also putting pressure on renewable sources of power generation. However, increases in demand will put upward pressure on natural gas prices. The transportation sector, the one part of the economy vulnerable to foreign energy supplies, is beginning to explore ways to use more natural gas. Transportation makes up less than 1% of U.S. natural gas consumption and would require billions of dollars in investment to increase that share significantly. All of the change that has taken place so far has occurred despite environmental concerns and regulatory developments at the state and federal level that might curtail production. Natural gas is a fossil fuel that produces various pollutants, some more than other fossil fuels and some less. Methane, the major component of natural gas, is also a potent greenhouse gas when released without burning. Other environmental concerns focus on water use and disposal in hydraulic fracturing to extract natural gas from shale formations. Over the next five years, many of the issues being debated now may be decided. The industry and market are adapting to the newly found supplies and the concerns associated with them, as well as integrating more natural gas into the economy. There are many evolving issues some of which Congress can influence directly because of statutes and some indirectly. On the demand side, legislation has been introduced regarding exports of liquefied natural gas and alternative fuels for vehicles. There has been other legislation related to environmental regulations of natural gas. The importance of oil in our world today Petroleum (also known as crude oil or simply oil) is a fossil fuel that was formed from the remains of ancient marine organisms. When petroleum products such as gasoline are burned for energy, they release toxic gases and high amounts of carbon dioxide, a greenhouse gas. Carbon helps regulate the Earth’s atmospheric temperature, and adding to the natural balance by burning fossil fuels adversely affects our climate. There are huge quantities of petroleum found under Earth’s surface and in tar pits that bubble to the surface. Petroleum even exists far below the deepest wells that are developed to extract it. However, petroleum, like coal and natural gas, is a non-renewable source of energy. It took millions of years for it to form, and when it is extracted and consumed, there is no way for us to replace it. Oil supplies will run out. Eventually, the world will reach “peak oil,” or its highest production level. Some experts predict peak oil could come as soon as 2050. Finding alternatives to petroleum is crucial to global energy use, and is the focus of many industries. Oil is a major component of modern civilization. In developing countries, access to affordable energy can empower citizens and lead to higher quality of life. Petroleum provides transportation fuel, is a part of many chemicals and medicines, and is used to make crucial items such as heart valves, contact lenses, and bandages. Oil reserves attract outside investment and are important for improving countries’ overall economy. However, a developing country’s access to oil can also affect the power relationship between a government and its people. In some countries, having access to oil can lead government to be less democratic—a situation nicknamed a “petro-dictatorship.” Russia, Nigeria, and Iran have all been accused of having petro-authoritarian regimes. It's easy to understand why oil is so important in our lives. Your parents couldn't drive their car unless it was filled with gasoline or petrol. The school bus couldn't make it to school without gasoline. Gasoline is made from crude oil. Lubricating oil is also used to keep our automobile engines from getting too hot and to ensure that all moving parts of the machinery are kept in good working order. In fact, our world would almost grind to a halt without oil. Factories would stop running. So would cars. Airplanes would be grounded. Tractors on the farm would sputter to a standstill and rust. And people's homes and offices, if heated by oil, would freeze in winter. Oil is used in many products. Here are just a few examples: farm fertilizers, plastic toys and other plastic goods, cosmetics, detergents, and nylon clothing. Even waxes for chewing gum are made from oil. Petroleum has played an important role in the social, economic, and political history of the United States and the world. Since the nineteenth century, the United States has been using petroleum as a source of energy production. We have encountered major energy crises in 1973, 1979, and 1990. All three of these crises coincided with increased social usage of petroleum as well as political turmoil in major exporting countries. Today we face a fourth energy crises along with economic and political unrest. The future of our country’s energy supply is uncertain, but we are sure the world will soon run out of petroleum and need other major sources of energy. The U.S. has dangerously relied on oil to play a major role in the past, present, and future of its social, economic, and political history. Throughout the twentieth century and into the beginning of the twenty first century petroleum has played an increasingly important role in the economy of the United States. Petroleum has become an important input in nearly every form of production that is carried out in the United States. Farming, mining, and manufacturing of all kinds have come to depend on petroleum and as such the price of outputs in these sectors and the health of our economy has depended heavily on the price of petroleum. Fortunately the price of petroleum in the U.S. has remained relatively low and stable throughout history. However, there are a few small exceptions to this truth. The three most noticeable exceptions to low stable petroleum prices came in 1973, 1979, and 1990. As a nation we are not only dependent on petroleum for transportation fuels and heating oil, but for a long list of products that we utilize daily without knowing the association with oil. We use and rely on petroleum daily, in a multitude of ways: from the gas in our cars to the fertilizer and pesticides used for our crops, even the clothes we wear! Although a large percentage of the oil we refine does go toward fueling our transportation needs and heating our homes. Believe it or not, some of the petroleum we are unknowingly dependent on is refined into chemicals which are the building blocks for many products that are used in everyday life. Products such as rubber, plastics, nylon, vinyl and even polyester which are all derived from petrochemicals. Examples of products we use (or encounter) every day that contain petroleum are: BUNKER FUEL Bunker fuel, which is also know as heavy oil, is used to power ships. It typically contains a high number of pollutants and contaminants. Use is increasing with the shipping associated with global commerce. DETERGENT All soapless detergents used to wash clothes and dishes are derived from the petrochemical glycerin. PLASTICS All plastic, unless it is “bioplastic”, is made from petrochemicals. Every product made from or containing plastic is a product that exists only through the distillation of petroleum. JET FUEL The standard type of jet fuel, Jet A, is a petroleum product with a number of additives to prevent sparking, gumming, corrosion, and icing. DIESEL FUEL Diesel, unless it is “biodiesel”, is made from refining crude oil. It is generally used in medium- and heavy-duty vehicles requiring a great deal of power and torque, like garbage trucks, road equipment, buses, and trains. HEATING OIL Heating oil is a petroleum product used to fuel furnaces or boilers. In the U.S., most heating oil is consumed in the northeast. SYNTHETIC RUBBER- Synthetic rubber is used for car tires and rubber soles on shoes. The demand for synthetic rubber is four times greater than that for natural rubber. SYNTHETIC FIBERS- Polyester, nylon, and acrylic are all derived from petrochemicals. They are used for curtains, carpets, rope and even our everyday clothing. FERTILIZERS & PESTICIDES- All major commercial fertilizers are ammonia based, made from natural gas, and most commercial pesticides come from oil. PAINT -Plastic and oil based paints, as well as paint additives, are manufactured from petrochemicals. GASOLINE- Gasoline is the most commonly used product by Americans for their day to day transportation needs. 45% of all oil used in the U.S. goes to gasoline, which means we consume in excess of 180 million gallons of gasoline a day. PHOTOGRAPHIC FILM – Pertochemical ethylene is what is used in photographic film. FOOD ADDITIVES – The shelf life of canned foods can be increased by food additives, derived from petrochemicals. MAKE UP – Make-up’s that contain oils, perfumes, waxes and color, are derived from petrochemicals. MEDICINE – Acetylsalicylic acid (ASA), the active ingredient in many pain reliever medicines, is manufactured from petrochemicals. CANDLES – Wax is a raw petroleum product. Crude oil is the most important natural resource of the industrialized nations. It can generate heat, drive machinery and fuel vehicles and airplanes. Its components are used to manufacture almost all chemical products, such as plastics, detergents, paints, and even medicines. As it is such an important resource it is very important to expand our technical ability to discover new sources and extend the production lives of existing oil fields. Life without oil? Impossible! Within our daily lives oil is used almost everywhere: Every year, 18 million tonnes of crude oil are processed into synthetic materials in Germany. Oil within our materials: 40 percent of all textiles contain oil; for functional clothing this may be as much as 100 percent. Oil within our leisure activities: 40 billion liters of oil a year are used to make CDs and DVDs. Oil helps us relax: A single sofa contains 60 liters of oil. Modern life is inconceivable without crude oil. The world consumes almost 14 billion liters of oil each day. This affects us all. Reduce Oil Dependence Costs Around one-third of the oil we use is imported, costing our economy roughly $192 billion annually. Increased domestic oil production from shale formations and improved fuel economy standards have decreased oil imports over the past few years, but the U.S. Department of Energy projects that we will continue to rely on imports for 25% to 32% of our petroleum needs in the future. Most of the world's oil reserves are concentrated in the Middle East, and about 73% are controlled by Organization of the Petroleum Exporting Countries (OPEC) members. Oil price shocks and price manipulation by OPEC have cost our economy dearly—about $2 trillion from 2004 to 2008. Solutions It's unclear whether we will ever completely eliminate our need to import oil, but we can reduce cartel market control and the economic impact of price shocks by reducing our petroleum consumption. EPA has established new corporate average fuel economy (CAFE) standards for new cars and trucks to help decrease our dependence on oil and to decrease greenhouse gas emissions. Increased standards for model year 2012 to 2025 vehicles are projected to • Gradually increase real-world fuel economy to about 45 mpg for the average car and 32 mpg for the average truck • Save consumers more than $1.7 trillion in fuel costs • Reduce our dependence on oil by more than 2 million barrels per day in 2025— about half of the oil that we currently import from OPEC countries each day • For vehicles purchased in 2025, save new car buyers $8,000 in fuel costs over that vehicle's lifetime (when compared to a vehicle meeting the model year 2011 CAFE standards) Ultimately, the solution to this problem lies in technological progress: • Developing advanced vehicle technologies that use energy more efficiently • Creating new energy sources that can replace petroleum cleanly and costeffectively • You Can Help You can help improve our energy security by selecting a vehicle that uses less petroleum. Each vehicle in our Find and Compare Cars section has an Energy Impact Score that shows the amount of petroleum it uses each year. You can also decrease your petroleum use by getting the best fuel economy possible out of your current car by driving sensibly, keeping your car in shape, and planning and combining trips.