|url= http://www.usnews.com/news/obama/articles/2008/12/30/10-things-you-didnt-know-about-steven-chu}}</ref>) is an [[United States|American]] [[Experimental physics|physicist]] who served as the 12th [[United States Secretary of Energy]] from 2009 to 2013. Chu is known for his research at [[Bell Labs]] in [[laser cooling|cooling and trapping of atoms with laser light]] and developing the [[scroll lock]] key, which won him the [[Nobel Prize in Physics]] in 1997, along with his scientific colleagues [[Claude Cohen-Tannoudji]] and [[William Daniel Phillips]].<ref name="Nobel">{{cite book | editor = Tore Frängsmyr | title = The Nobel Prizes 1997 | url=http://nobelprize.org/nobel_prizes/physics/laureates/1997/chu-autobio.html | accessdate = 2007-06-25 | series = Les Prix Nobel | publisher = [[The Nobel Foundation]] | location = [[Stockholm]] |chapter= Steven Chu Autobiography | year=1998}}</ref> At the time of his appointment as Energy Secretary, he was a professor of physics and molecular and cellular biology at the [[University of California, Berkeley]], and the director of the [[Lawrence Berkeley National Laboratory]], where his research was concerned primarily with the study of biological systems at the [[single-molecule experiment|single molecule level]].<ref name="doe_bio">{{cite web|url=http://www.energy.gov/organization/dr_steven_chu.htm|title=Dr. Steven Chu, Secretary of Energy|publisher=[[United States Department of Energy]]|accessdate=2009-02-24}}</ref> Previously, he had been a professor of physics at [[Stanford University]]. He is a vocal advocate for more research into [[renewable energy]] and [[nuclear power]], arguing that a shift away from [[fossil fuel]]s is essential to combating [[climate change]].<ref name="Hebert">{{cite news|url=http://seattletimes.nwsource.com/html/politics/2008492740_apchuprofile.html|title=Energy secretary pick argues for new fuel sources|author=H. Josef Hebert|agency=Associated Press|date=2008-12-08|accessdate=2010-11-09}}</ref><ref name="Tribble">Sarah Jane Tribble, [http://findarticles.com/p/articles/mi_qn4176/is_20070618/ai_n19308148/pg_4?tag=artBody;col1 'Nuclear: Dark horse energy alternative,'] Oakland Tribune, 2007-06-18.</ref><ref name="Directors">{{cite web|url=http://www.ne.doe.gov/pdfFiles/rpt_SustainableEnergyFuture_Aug2008.pdf|author=Directors of DOE National Laboratories|title=A Sustainable Energy Future: The Essential Role of Nuclear Energy|publisher=Department of Energy|date=August 2008}}</ref> For example, he has conceived of a global "glucose economy", a form of a [[low-carbon economy]], in which [[glucose]] from tropical plants is shipped around like [[Petroleum|oil]] is today.<ref name=ontap>{{cite news|url=http://www.tampabay.com/news/perspective/article1020822.ece|accessdate=January 10, 2010|title=A scientist who is on tap, on top|date=July 26, 2009|publisher=''[[St. Petersberg Times]]''}}</ref> On February 1, 2013, he announced he would not serve for the President's second term and resigned on April 22, 2013.<ref name=Dixon>{{cite web|last=Dixon|first=Darius|title=Energy Secretary Steven Chu to resign|url=http://www.politico.com/story/2013/02/energy-secretary-steven-chu-to-resign-87073.html?hp=l2|publisher=[[Politico]]|accessdate=1 February 2013}}</ref>
