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PaleontologyMammal ancestors’ shrinking inner ears may reveal when warm-bloodedness arose
An abrupt shift in inner ear shape of mammal ancestors 233 million years ago, during a time of climate swings, points to evolution of warm-bloodedness.
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Health & MedicineA new technology uses human teardrops to spot disease
A proof-of-concept technique to analyze microscopic particles in tears could give scientists a new way to detect eye disease and other disorders.
By Meghan Rosen -
Dogs are great sniffers. A newfound nose-to-brain connection helps explain why
A new anatomical description of how smell works in a dog brain shows why they’re such good sniffers.
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AnimalsThese huntsman spiders do something weird: live together as a big, happy family
Five unusual species of spider moms let youngsters live at home way past the cute waddling baby phase.