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Endangered Sumatran tigers born in Greece as zoos build safety net

The world’s most endangered tigers have started a family in Greece, offering hope for a predator rapidly vanishing from the wild. Three two-month-old Sumatran tiger cubs received identification microchips and their first vaccinations on Tuesday at a zoo near Athens, as part of a global effort to build a backup population.

ALMA watches a massive binary assemble in real time

Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have captured one of the most detailed three-dimensional views yet of a massive binary star system while it is still being born. By tracking the motions of two young, massive stars over nearly eight years, the team found that the pair follows a highly stretched-out…

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