Ever wonder how many trees stand tall in North America's vast boreal forest? A new University of Alberta study has the answer ...

Despite its stature, the tree is falling behind on the leaderboard for the tallest in the city. Local nonprofit Restoring ...

Shape and symmetry help determine where a leaf lands — and if the tree it came from can recoup the leaf’s carbon as it decomposes.

Allergy-inducing plants are those that rely on wind rather than bees or butterflies to spread their pollen. Ragweed, which ...