EPA Sets New Power Plant Emission Standards

St. Johns River Power Park, Jacksonville, Fla. (photo courtesy of Creative Commons).

Agnus Dei Farrant
Executive Producer

Mercury has been shown to harm the nervous systems of children exposed in the womb.

Bacteria Thrive On Arsenic, Redefine Search For Extraterrestrial Life

Felisa Wolfe-Simon, the research team's lead scientist, processing mud from Mono Lake. Photo: Henry Bortman

Len Ly
Senior Staff Reporter

Arsenic is poisonous to most known life on Earth.

(Photo courtesy NASA Goddard Space Center)

Scientists found the bug in the waters of Mono Lake, Calif.