Vessels in a tree’s xylem transport water from the roots to the rest of the plant. Hardwood tree species tend to have large ...

Most people think they don’t get enough sleep, but compared to the animal kingdom, we’re wide awake. Some species spend nearly an entire day doing absolutely nothing, all for good reason.

New research finds that centuries-old oaks can dynamically rewire how they absorb nutrients—suggesting forests may be more resilient allies in the climate fight than once believed.

The thought that such a small creature could feel safe enough in our presence to raise its young is heartwarming, indeed — but not all clusters of twigs and leaves you spot in your trees are birds’ ...