microbes

NASA Discovers Microbe that Thrives on Toxic Arsenic

NASA has discovered a bacteria that can use arsenic -- which is toxic to most forms of life -- as a building block of its DNA. Scientists say the discovery may broaden our definition of what constitutes life and may revolutionize how we search for life beyond Earth.

The War Over Raw Milk: A Battle Heats Up

The FDA has long banned interstate sales of raw milk, and many states restrict or prohibit the sale of raw milk entirely. After several crackdowns by federal and state agencies, raw milk drinkers are fighting back.