The Himalaya is one of the fastest changing regions of the world due to global warming. The mountains

A map of the world

Lake Turkana is a miraculous anomaly of life-giving water in a parched and unforgiving land. Formed millions of years ago in the tectonic upheavals that created East Africa

For decades, the Sardar Sarovar Dam on India's Narmada River has been a powerful symbol of what is going wrong with large dam projects. A new independent review shows that the project's benefits have not been realized, while the social, environmental and financial costs are even more serious than expected.

The modern story of the Iraqi Marshlands begins tragically - with intentional environmental destruction used as a political weapon - but today is one of miraculous renewal, international cooperation and hope. Once at the brink of total collapse, the area has been restored to a point where it will soon be proposed as a UN World Heritage Site.

Crossing through ten countries and draining the territory of 19 countries, the Danube is the most international river in the world. In addition to the 83 million people living in the river basin, the Danube is home to globally important species of flora and fauna.

Just as Hurricane Katrina caused levees in the Mississippi Delta to breach in August 2005, flooding large parts of New Orleans, this year

The timeless rhythm of the Mekong

Nutrients carried by the Amazon River into the Atlantic Ocean help absorb significant amounts of carbon dioxide (CO2) from the atmosphere, new research reveals. The nutrients fertilize a type of plankton that the researchers estimate to consume 27 million metric tons of CO2 annually.

For 15 days in January, hundreds of men, women and children marched across river valleys of India's Uttarakhand state to raise awareness about government plans to build dams. The government intends to build 220 large, medium and small dams in the upper reaches of the Ganges River basin.