Costa Rican sloth antibiotics offer hope for human medicine

The fur of Costa Rican sloths appears to harbor antibiotic-producing bacteria that scientists hope may hold a solution to the growing problem of "superbugs" resistant to humanity's dwindling arsenal of drugs.

Extinct ground sloth likely ate meat with its veggies

A new study led by researchers at the American Museum of Natural History suggests that Mylodon—a ground sloth that lived in South America until about 10,000 to 12,000 years ago—was not a strict vegetarian like all of ...

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