Global warming could bring hunger, melt Himalayas

Global warming could cause more hunger in Africa and melt most Himalayan glaciers by the 2030s, according to a draft U.N. report which also warns that the poorest nations are likely to suffer most. The U.N. climate panel, giving the most authoritative study on the regional impact of climate change since 2001, also predicts more heatwaves in countries such as the United States, and damages corals including Australia's Great Barrier Reef. "We are talking about a potentially catastrophic set of developments," Achim Steiner, the head of the U.N. Environment Programme, said of the likely impact of rising temperatures, widely blamed on greenhouse gases from burning fossil fuels. "Even a half meter (20 inch) rise in sea levels would have catastrophic effects in Bangladesh and some island states."

Among the gloomy forecasts, the report predicts that glaciers in the Himalayas, the world's highest mountain range, will melt away, affecting hundreds of millions of people. And disruptions are likely to be felt hardest in poor nations, such as sub-Saharan Africa and Asia where millions more could go hungry because of damage to farming and water supplies. Still, some nations will see some benefits, according to the draft by the Intergovernmental Panel on Climate Change (IPCC) which draws on work by 2,500 scientists. Global farm potential might increase with a rise of 3 degrees Celsius (5.4 Fahrenheit) in temperatures, before sinking worldwide, it says. Crops might grow better in nations far from the tropics such as Canada, Russia, New Zealand or Scandinavia.

The United Nations reckons the report, together with one in February that concluded it was more than 90% likely that recent warming had a predominantly human cause, will add pressure on governments to do more to head off damaging change. "We've passed the tipping point," Steiner said, adding that the public, governments and businesses seemed convinced that global warming was a major threat and not some vague theory about which scientists disagreed. "It's no longer about whether (climate change) is happening but about how we deal with it," he said.

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