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Dolphins bray when chasing down a fish

The first high-resolution analysis of which dolphin is making which sound suggests that hunters blurt out a low-frequency, donkeylike sound that may startle prey into freezing for an instant or attract other dolphins.

Invader ants win by losing diversity

The Argentine ants that are trouncing U.S. species derive much of their takeover power, oddly enough, from losing genetic diversity.

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I think it’s more than coincidental that the sound repertoire of babbling babies, compared with the speech sounds in a diversity of languages across the world, lends credence to the idea that there was a mother tongue that goes back to prehistoric times.