It doesn’t matter if Alex Pretti had a gun

Shortly after federal agents killed Alex Pretti Saturday morning, the Department of Homeland Security began to run with the story that the dead man had been armed and dangerous. He had a gun, DHS said. (A Bellingcat analysis of the video concludes that Pretti was unarmed when he was shot.) He had approached the agents…

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Forensic science meets ancient art—inside the quest for Leonardo da Vinci’s DNA

Kendra Pierre-Louis: For Scientific American’s Science Quickly, I’m Kendra Pierre-Louis, in for Rachel Feltman. It’s been more than 500 years since Leonardo da Vinci died. Yet, in those intervening centuries interest in the Italian polymath, who seemingly moved with ease between art, architecture and engineering, among other fields, has only grown. So has interest in…

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