EMBARGOED—NOT FOR PUBLIC RELEASE BEFORE:
Monday, February 9, 2015
 3:00 PM US Eastern Standard Time
 8:00 PM Greenwich Mean Time
Tuesday, February 10, 2015
 5:00 AM Japanese Standard Time
 7:00 AM Australian Eastern Time
The full PNAS embargo policy is available here:
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Complete list of articles expected to publish in PNAS the week of February 9:
<http://www.eurekalert.org/jrnls/pnas/subject.htm>
IMPORTANT NOTE: The articles listed below will publish on Monday, February 9,
2015. All other articles will publish throughout the week as soon as final corrections
are made; therefore, the exact date of publication is not scheduled in advance. Please
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
Fire propagation dynamics
A study of fire propagation along nitrocellulose strips under varying conditions finds that a
slow-burning structured regime can erupt into a fast unstructured regime stabilized by
feedback between fire and wind, and that the transition between the two regimes is
preceded by slowed recovery from perturbations, a phenomenon called critical slowing
down, suggesting possible indications of eruptive events in forest fires.
Article #14-17043: “Warning signals for eruptive events in spreading fires,” by Jerome M.
Fox and George M. Whitesides.
MEDIA CONTACT: George M. Whitesides, Department of Chemistry and Chemical Biology,
Harvard University, Cambridge, MA; tel: 617-495-9430; e-mail:
<gwhitesides@gmwgroup.harvard.edu>
http://www.eurekalert.org/jrnls/pnas/14-17043.htm