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Scientists call them "fast radio bursts," or FRBs: mysterious pulses of radio waves coming from far, far away. Researchers in Australia say they've observed one in real time.

Detox diets are a hot trend, but scientists say there's really no evidence that they are necessary or helpful. One strategy that does make sense: Cut back on sugar. We tell you why.

When a general in Iran's elite Revolutionary Guard and several ranking members of Hezbollah were killed Sunday, they were within 10 miles of Israel's northeastern border.

The IRS commissioner warns that congressionally mandated budget cuts are hurting the agency's ability to crack down on tax cheats, process timely refunds and even staff its help lines.

President Obama is preparing to deliver his sixth State of the Union address Tuesday night. He plans to focus on the middle class. Steve Inskeep talks to White House Chief of Staff Denis McDonough.

A law allows certain prison terms to be commuted for convicts who come up with serious technical innovations. The Beijing Youth Daily reports that's led to a business in "get out of jail" patents.

There is bipartisan support for sanctions — and a veto threat from the president. His chief of staff, Denis McDonough, says the White House would consider congressional action "later in the year."

While writing his new book, historian Eric Foner relied on a recently discovered record of slaves' escapes. He says the documents paint a "revealing picture" of life on the Underground Railroad.

The discovery comes days after up to 50,000 gallons of oil spilled from a break in a pipeline along the Yellowstone River. Saturday's spill is the second in the river since 2011.