The sight of “yellow vest” protesters torching cars and smashing storefronts on some of the poshest avenues in Paris this month was a double-blow for the city’s Mayor Anne Hidalgo. First, it was a clear hit to the image of Paris as a global magnet for talent, investment and technology. Hidalgo has spent much of the last two years talking ...

Shipping is the lifeblood of global commerce — more than 80 percent of world trade goes by water. But the industry is also an environmental menace, producing as much carbon dioxide annually as Germany. The International Maritime Organisation (IMO) has helpfully called for ships to produce about 85 percent less sulfur by the end of next year, and to halve ...

Asteroid impacts used to be science popularisers’ favorite existential threat, but space rocks have been displaced by atmospheric carbon. This is not just fashion but the result of a new reading of our planet’s past. In the 1990s, scientists thought asteroid impacts had triggered five mass extinctions, including the extinction of the dinosaurs 65 million years ago. Now, they’ve come ...