At the top of the world, there is a sea—the remains of one, at least. The summit rocks of Mount Everest, the highest ...

Botanists have found a stand of rare trees in Tanzania’s Zanzibar archipelago not known to grow wild anywhere else in Africa.

Pando, Utah, USA Nestled in the heart of Utah, Pando is not just a tree but an entire forest, all connected by a single root ...