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Nadia Popovici wrote a message on her phone, with “mole,” “cancer” and “doctor” in bright-red type to get the attention of Brian Hamilton, an...

  • Nadia Popovici had volunteered at hospitals and studied enough to detect that the red-brown mole on the back of Brian Hamilton’s neck was cancerous. But as she sat at a hockey match, she had to decide how to best make sure he knew. https://t.co/BHqtNNPNgl - view on twitter

His discoveries of ancient human skulls and skeletons, including the famed “Turkana Boy,” helped cement Africa’s standing as the cradle of...

C.D.C. researchers are watching for signs that Omicron may affect the youngest children in unforeseen ways, but other factors may explain the...

A Harvard professor for 46 years, he was an expert on insects and explored how natural selection and other forces could influence animal behavior....

The company said the treatment, Paxlovid, taken in pill form, reduced the risk of hospitalization and death by 89 percent if given within three...

In the letter, which sold at auction in London on Wednesday, the Russian empress called for widespread access to a precursor of the smallpox...

  • In 1787, Catherine the Great told a governor-general that among his most important duties “should be the introduction of inoculation against smallpox, which, as we know, causes great harm, especially among the ordinary people.” https://t.co/1NKmvQqLW2 - view on twitter

From February to July, an entire pack and three other wolves were found dead from poisoning, according to the...

  • “The poisoning of an entire pack is significant,” a spokeswoman for the the Oregon Department of Fish and Wildlife said. Officials in the state found eight wolves had been poisoned this year, along with several other animals.  https://t.co/Tt3sp1yFhf - view on twitter

A Harvard professor for 46 years, he was an expert on insects and explored how natural selection and other forces could influence animal behavior....