Undersea Cables: Vulnerability and Significance

If you don’t have enough food in the first 1,000 days of your life, your brain may never reach its full potential. Our correspondent discusses what better nutrition would mean for the world. Undersea cables are the arteries of our telecommunications system, but that also makes them vulnerable (9:13). And a new powder may help make periods less of a bloody nuisance (17:42).

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