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 ...

Far from being barren wastelands, deserts are biologically rich habitats with a vast array of animals and plants that have adapted to the harsh conditions there. Some deserts are among the planet ...

The elongated ice masses, which are threatened by human-caused climate change, help spark new life in the surrounding "polar desert" and ... to study how arctic plants colonize new land.