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:

Regulators order pipeline testing, other steps after spill

The company responsible for a pipeline that spilled thousands of gallons of oil along the California coast was ordered to take a series of steps before it can restart the line, federal regulators said Friday.

Visualizing how radiation bombardment boosts superconductivity

Sometimes a little damage can do a lot of good—at least in the case of iron-based high-temperature superconductors. Bombarding these materials with high-energy heavy ions introduces nanometer-scale damage tracks that can ...

Domino's taking orders via tweet

Domino's on Wednesday launched perhaps the easiest way to satisfy a pizza craving this side of mind reading: order by tweet.

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