Duh!-----Scientists develop revolutionary new tool that uses trees to help cool down cities: 'That information hasn't been available'

Planting trees is a common cooling method, but it relies primarily on guesswork and isn't backed by precise science.

• "Trees are good at cooling because they pump a lot of water from the ground into the air, and when that water evaporates at the leaf surface, it absorbs a vast amount of heat," said Steward Pickett, co-author and urban ecologist at Cary Institute of Ecosystem Studies.
• "That's just the physics of evaporation. The shade provided by trees also helps with cooling," he added...