In just two centuries, many plant species have scrambled 500 meters up the Andes in search of cooler temperatures.
The speed at which the warming climate is melting glaciers in Central Asia may ruin the water supply of millions of people within 50 years.
Scientists call for an international effort to learn why temperatures on some mountains appear to be rising faster than in nearby lowlands.
The speed at which soil is produced by rain falling on mountain slopes proves to be much faster than science had realized -- with significant implications for carbon in the atmosphere.
Pollution -- not rising temperatures -- is thought to have started melting the Alps of central Europe in the mid-19th century.