Up to a billion people in Asia could be hit hard by global climate change - from floods, droughts, acute water shortages and hunger. India, and the larger subcontinent, will be one of the big losers. ST's Nirmal Ghosh trekked up to Himalayas, journeyed to the lowlands of the Sunderbans, to gather a first-hand picture of the realities and implications of global warming.

For Millennia, it is the glacier - the largest in the Himalayas - that has fed the Ganga, a river that is the lifeblood of hundreds of millions in its vast and fertile plains.But the river's very source is shrinking. What are the implications?

Devi Asmarani returns to her childhood home in Central Kalimantan and finds out how the buzz of saws in Indonesia's rampant deforestation is snuffing out the homes for the endangered Orang Utans.

Devi Asmarani returns to her childhood home in Central Kalimantan and finds out how the buzz of saws in Indonesia's rampant deforestation is snuffing out the homes for the endangered Orang Utans.

From the measures taken to save Australia's Great Barrier Reef to China's efforts to go green, ST's China Correspondent Tracy Quek talks about how climate change has begun its assault.

From the six-seater Cessna plane gliding low, the coral reefs sitting appear as opalescent pebbles cast into limpid waters. But climate change has already begun its assault on the Great Barrier Reef. What can we do about it? Tracy Quek explains why it is not all a case of too little, too late.