Exceptionally preserved fossil gives voice to ancient terror bird

A new species of South American fossil terror bird called Llallawavis scagliai ("Scaglia's Magnificent Bird") is shedding light on the diversity of the group and how these giant extinct predators interacted with their environment. ...

NSA collected thousands of US communications (Update 2)

The National Security Agency declassified three secret court opinions Wednesday showing how in one of its surveillance programs it scooped up as many as 56,000 emails and other communications by Americans not connected to ...

US to use Facebook, Twitter to issue terror alerts

Terror alerts from the government will soon have just two levels of warnings — elevated and imminent — and those will be relayed to the public only under certain circumstances. Color codes are out; Facebook and ...

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