This video features the Alpstein mountain range in Appenzell, Switzerland, where towering limestone peaks rise above steep ...

Today’s marine biodiversity “hotspots” weren’t always so hot, say researchers. A review of fossil records and molecular evidence found the zones with the greatest variety of fish, molluscs and corals ...

Oceans and continents -- Continents in collision : Kashmir, Ladakh, Zanskar -- The dreaming spires of the Karakoram -- Pressure, temperature, time, and space -- Frozen rivers and fault lines -- ...