Yellowstone bacteria offer biofuel promise

Bacteria first discovered in Yellowstone's hot springs could help produce ethanol from crops such as switchgrass.

Water treatment plants may make water more toxic

Waste water treatment could actually be increasing the amount of some toxins, by transforming common pain-killing drugs into more dangerous forms.

Chatting bacteria hike atmospheric CO2

Bacteria in the ocean are communicating and cooperating in a phenomenon which could be having a significant impact on the planet's climate.