Photons filter down through the atmosphere and are eagerly absorbed by light-powered organisms such as plants and algae ... Every winter in the high Arctic, for example, the sun, hidden by ...

Many desert plants are built to protect their water stores, and none are better defended than the cactus. Filming in the Sonoran Desert of Arizona, can be a painful experience, especially when ...

Each biome contains multiple ecosystems, and all but the most frigid arctic regions are supported by plants. There are five main types of biomes —forest, desert, tundra, aquatic, and grassland ...