Biology news

Q&A: Why are antibiotics used in livestock?

Wal-Mart, the world's biggest retailer, is the latest company to ask its suppliers to curb the use of antibiotics in farm animals. Here's a rundown of what's driving the decision: ...

date13 hours ago in Other
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Serengeti Park disappearing

A huge wildebeest herd migrates across the open, parched plains. Dust swirls up from the many hooves pounding the ground, and forms a haze over the landscape. The setting sun gives the scene a golden tinge.

date22 hours ago in Ecology
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