Jul 1, 2017

There are tiny meteorites you may never see

Jon Larsen

It's thought that up to 10 tons of extraterrestrial dust lands on Earth each day. Among the deliveries are these tiny, metallic micrometeorites. Scientists normally hunt for the mini space rocks (typically 0.2 to 0.3 mm in diameter) in polar regions and at the bottom of the ocean, where the samples won't be contaminated by industrial pollution. But Jon Larsen, a jazz musician-turned-researcher, found this micrometeorite and others on some rooftops in Europe. He describes the alien dust, and his quest to find it, in his book In Search of Stardust.

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Syria's darkest chapter

Family room without a family, in Idlib. Photo: Muhammed Said/Anadolu Agency via Getty Images

The worst humanitarian crisis of Syriaโ€™s brutal civil war is colliding today with what could be the warโ€™s most dangerous geopolitical showdown, after at least 29 Turkish troops were killed in an airstrike.

The big picture: The fighting is taking place in Idlib in northwest Syria, where a ferocious Syrian and Russian offensive has displaced 1 million civilians and infuriated Turkey, which borders the region.

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Fear of coronavirus pandemic escalates

Photo: Abdulgani Basheer/AFP/Getty Images

In the blink of an eye, we've entered a new phase on the coronavirus.

The big picture: Italy, Iran and South Korea are at "decisive" points in their responses, the World Health Organization said on Thursday.

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