Whenever he’s home, 84-year-old Toshiaki Morioka carries an alarm device that measures temperature and humidity, which can summon emergency responders at the press of a button. He takes it to bed, to ...

Coral bleaching isn’t just an ocean crisis. Here’s how the global event endangers food security, local jobs—and the land itself. Sea water divides the sunset and a ghost land of corals in New Ireland, ...