News
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AnimalsA year after Australia’s wildfires, extinction threatens hundreds of species
As experts piece together a fuller picture of the scale of damage to wildlife, more than 500 species may need to be listed as endangered.
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Health & MedicinePeople fully vaccinated against COVID-19 can socialize without masks, CDC says
Two weeks after their final COVID-19 shot, people can visit other vaccinated people indoors without masks or physical distancing.
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AnimalsA sea slug’s detached head can crawl around and grow a whole new body
Chopped-up planarians regrow whole bodies from bits and pieces. But a sea slug head can regrow fancier organs such as hearts.