Dusting the Sky With Diamond is the Latest Crazy Scheme to Cool the Planet

Geoengineering — hacking Earth’s climate system to reverse global warming — often sounds a bit preposterous, whether we’re talking about deploying giant space mirrors or dumping a bunch of iron filings into the ocean. The latest proposal? Dusting the stratosphere with billions of dollars worth of powdered diamond. »10/27/15 9:00pm10/27/15 9:00pm


China Is Turning a Remote Reef Into an Artificial Island With a Runway

A remote archipelago in the South China Sea has come under an extraordinary amount of scrutiny lately. Here, China is building up small reefs and atolls into whole artificial islands—all in hotly disputed territory. In the clearest sign yet of its military intentions, one of those islands now has an airstrip. »4/21/15 2:30pm4/21/15 2:30pm