China hopes to increasingly control when and where it rains. Ally Hirschlag examines why its ambitious cloud seeding plan is so controversial – and whether it actually works.

Hong Kong's weather service said Tuesday the city endured the hottest October on record, as scientists warn extreme heat will become more frequent and intense because of human-induced climate change ...

China set out to stop its deserts from swallowing farms and cities by planting trees on a scale the planet had never seen. After decades of work and tens of billions of saplings, scientists now say ...