How humans and computers play chess differently — and what computers have taught humans about the game.
Red flag warnings issued for Arizona's forests
Strong winds and low humidity add up to a bad combination for Arizona’s forests. Forecasters warn that much of the northern half of Arizona will be ripe for wildfires Tuesday. The National Weather Service has posted red flag warnings starting at 11 a.m. for the region, with humidity expected to drop into single digits while wind gusts near forty miles an hour.