The Antarctic blue whale (Balaenoptera musculus ssp. Intermedia) is the largest animal on the planet, but it is critically endangered. WWF is working to protect blue whale habitat, and a remarkable ...

Spiders in this toxic sulfur cave have built a thriving spider metropolis and the largest spider web complex in the world!

Due to its vast size — stretching from Canada and Greenland in the north, to Mexico in the south — North America contains a vast range of habitats. From land to sea, there are forests, mountains, ...