So what exactly is biofuel? It’s clean, renewable fuel produced from biomass -- organic material such as plants, residue from agriculture, and even algae.
Talking to young people about clean, renewable energy sources as part of the White House's Take Our Daughters and Sons to Work Day.
View photos from the 2012 ARPA-E Energy Innovation Summit Technology Showcase, where over 240 breakthrough energy developments from ARPA-E awardees and other innovative companies were on display this year.
Representing more than a million vehicles nationwide, National Clean Fleets Partnership are reducing their vehicle's petroleum use.