News
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Animals‘Forever chemicals’ could be aging dolphins beyond their years
Common dolphins in New Zealand are biologically older than their calendar ages. Trace metals and “forever chemicals” may be to blame.
By Libby Riddle -
AstronomyNew images reveal Betelgeuse’s buddy star
A century of hints has suggested the famed red supergiant had a star pal but seeing it amid Betelgeuse’s brightness has been hard — until now.
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AnimalsSeals’ amphibious hearing developed a long, long time ago
Researchers scanned the ears of hundreds of marine mammals to deduce when pinnipeds evolved to hear well in both air and water.
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PaleontologySpines of saber-toothed cats tell a tale of the doomed species
Remains pulled from the La Brea Tar Pits revealed deformed vertebrae and rare tumors, possible signs of inbreeding among now-extinct saber-toothed cats.