More than 3 trillion trees now grow on Earth, seven times more than scientists previously thought. But it's also trillions fewer than there used to be, a new study concludes. A United ...

New study estimates how many trees there are on Earth. — -- How many trees are there on Earth? It's the ultimate estimation game, but a group of Yale researchers believe they have arrived at the ...

a Spatial pattern of tree numbers within a 0.01° grid. b Latitudinal distribution of tree density and total tree numbers, with shaded areas indicating the standard deviation of the estimated tree ...