Every predator needs to catch its prey. We humans use our hands, sharks and wolves use their jaws, but a few animals such as frogs use something much stranger: their tongues. To understand just how ...
Discovered: why happier people are happier, a bleak outlook for frogs, a theoretically good snack to keep you awake, an odd finding in a heart-attack study, and smoggier living may lead to strokes.
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