Photo of the Day
Large bags of green algae hanging outside of a power plant in Arizona
Biofuel Bags
An October 2007 story examined the industry of biofuels. This photo shows bags of algae hanging outside of a power plant near Phoenix, Arizona. At the time, researchers planned for the green scum, fed by power plant exhaust, to soak up carbon dioxide while cranking out thousands of gallons of biodiesel each year.
