J.D. Vance was largely unknown in American politics until Donald Trump picked him as his running-mate for vice-president. Last night he gave his first speech to the Republican National Convention. Why is trade so sluggish within Latin America (11:34)? And forget management books: literature offers the best lessons in leadership (20:14).

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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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After decades of torpor, is Japan recovering its dynamism? Our correspondent turns to an ancient bento box merchant to test Japan’s economic future. A new study shows how few therapies tested on animals end up being applied to humans (10:02). And if you don’t know a pickle fork from a fish fork, it could be time to take an etiquette class (16:28).

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