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The probe found enough energy to send a signal — which hadn't been guaranteed. If all goes well, we may know fairly soon whether the comet it's on carries the stuff of life, says Marcelo Gleiser.

Fed Chair Janet Yellen says that although job growth is rebounding, she sees no inflation threat and no hurry to raise rates. The Fed is not likely to do so before the presidential election.

The choice of Betsy DeVos signals intentions to make school choice a major piece of Trump's education agenda, which could include a voucher plan to help send children to private and parochial schools.

Phones are becoming more shopping-friendly and more consumers are willing to wait for online deals. This year's online sales boost signals an era of mobile shopping as retailers race to keep up.

The year 2015 was a busy one for science, with discoveries on many fronts. Astrophysicist Marcelo Gleiser offers thoughts on a few.

Secretary of State Rex Tillerson has a tough trip ahead. He's trying to heal a rift between key Arab allies, Saudi Arabia and Qatar, and later in the week will head to South Asia to expand relations with India.

French officials have been frustrated that digital companies have been able to avoid taxes by establishing their European headquarters in countries that offer corporations low tax rates.

Editorials in major U.S. dailies signaled cautious backing of President Obama's plan to broaden an American-led offensive against the insurgency.

In a Swedish castle, Houthi rebels will meet for peace talks with the government they chased out of the nation's capital in 2015. Expectations for the talks are low but they're seen as a start.

When temperatures soar, there's nothing like a frozen treat to take off the edge. But if we dive in too fast, our brains are thrown for a distressing and sometimes painful loop. Here's why.