Trees supply leaves with water because of a decrease in hydrostatic or water pressure into upper, leaf-bearing parts called crowns or canopies. This hydrostatic pressure difference "lifts" the ...

Not every nest in trees is a bird nest! Here's what a squirrel nest looks like and how to deter squirrels from nesting in ...

All tree leaves exhibit margins—the blade-like edges of the leaves—that are either serrated or smooth. Leaf margins can be finely classified based on at least a dozen unique characteristics.

Hang the feeder in a quiet spot close to the plants and flowers these feathered fairies already enjoy, but not in a spot that ...

A Maryland program to spot and document its biggest trees started a century ago. John Bennett is the man who keeps the ...

Authorities say two firefighters were killed and another was badly injured after they were ambushed and shot while responding ...