E.U. plunges into messy divorce as Britain gives formal notice to leave

A little over nine months after British voters chose to withdraw from the European Union, Britain took a decisive - and likely irreversible - step Wednesday toward leaving a partnership that has bound the country to the continent for nearly half a century.

Oklahoma man kills 3 suspected burglars with AR-15 rifle

An Oklahoma man shot and killed three suspected teenage burglars when they broke into his home, and the 23-year-old is unlikely to be charged based on initial evidence, authorities said on Tuesday.

Trump moves decisively to wipe out Obama-era climate policies

The president on Tuesday took his most significant step yet in obliterating his predecessor's environmental record, instructing federal regulators to rewrite key rules curbing U.S. carbon emissions.

Scottish Parliament OKs second referendum on independence

The Scottish Parliament on Tuesday voted in favor of seeking another referendum on independence, setting the stage for a standoff between the British prime minister and the first minister of Scotland.

The DNA of oil wells: U.S. shale enlists genetics to boost output

A small group of U.S. oil producers has been trying to exploit advances in DNA science to wring more crude from shale rock, as the domestic energy industry keeps pushing relentlessly to cut costs and compete with the world's top exporters.

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