Authorities in Oregon are trying to extinguish a fire burning in one of the world's tallest trees. It may lower the tree's ...

But, as the radius increases, the resistance drops. For small trees, both the radius and the length increase with height, so the flow resistance may drop as the tree grows.

Forests protect against avalanches, but not every forest is equally effective. Thanks to almost 50 years of observations at ...

Take a pencil and move several meters away from the tree. Outstretch your arm and hold the pencil so that you can measure the height of the tree on the pencil with your thumb.

Palm trees do what trees are supposed to do, they grow. To have a roofline height restriction is most unrealistic for even a plum tree could grow taller than 15 feet.