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Hot ocean water blamed for ancient mass extinction

WASHINGTON—Scientists think they've figured out the falling dominoes that led to Earth's largest mass extinction and worry that human-caused climate change puts the planet on a vaguely similar path.

Some 250 million years ago, about 90 percent of sea life and 70 percent of land life went extinct in what is now called the “Great Dying.”

Travellers face chaos as drones shut London’s Gatwick airport

LONDON — Tens of thousands of passengers were delayed, diverted or stuck on planes Thursday as the only runway at Britain’s Gatwick Airport remained closed into a second day after drones were spotted over the airfield.

The airport south of London Britain’s second-busiest by passenger numbers closed its runway Wednesday evening after two drones were spotted.