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Did Neanderthals use rhinoceros teeth as tools?

The RINO project was born from the discovery of unusual marks on rhinoceros teeth recovered from the prehistoric Payre site in France's Rhône Valley. The study of fossil rhinoceros teeth from this Middle Paleolithic site, dating to around 250,000–130,000 years ago, provides

Shell too snug? Hermit crabs have a fix

For decades, biologists have known that hermit crabs forced to live in shells that are too small slow their growth. What wasn't clear was how they did it. New research suggests the answer isn't simply that the crabs eat less. Instead, they appear to regulate growth by changing

Famous 'Pink Planet' harbors a salty surprise

Northwestern University-led astronomers have discovered salty skies surrounding the universe's famous "Pink Planet." For more than a decade, the ancient, rosy-hazed world kept astronomers guessing. One of the coldest known planetary-mass companions ever directly imaged, the