Yellowstone: Bison slaughters done for the season

Yellowstone National Park administrators say shipments of wild bison to slaughter are done for the winter after almost 600 animals were removed in an effort to shrink their numbers.

Kerry: Some NSA surveillance reached 'too far'

Secretary of State John Kerry's remark that some National Security Agency surveillance "reached too far" was the first time a high-ranking Obama administration official acknowledged that U.S. snooping abroad might be seen ...

US leads government demands for Twitter user data

Twitter revealed on Wednesday that government demands for information about users rose in the first half of this year, with US authorities accounting for more than three-quarters of the requests.

Dense hydrogen in a new light

(Phys.org) —Hydrogen is the most abundant element in the universe. The way it responds under extreme pressures and temperatures is crucial to our understanding of matter and the nature of hydrogen-rich planets.

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