* Animals most at risk on islands, mountains and coasts
* Global warming threatens 20-30 pct of plant, animal species Climate change hotspots in Africa

Several animal species including gorillas in Rwanda and tigers in Bangladesh could risk extinction if the impact of climate change and extreme weather on their habitats is not addressed, a UN report showed on Sunday.

The global output of heat-trapping carbon dioxide has jumped by a record amount, according to the US department of energy, a sign of how feeble the world's efforts are at slowing man-made global warming.

The figures for 2010 mean that levels of greenhouse gases are higher than the worst case scenario outlined by climate experts just four years ago.

"The more we talk about the need to control emissions, the more they are growing," said John Reilly, the co-director of MIT's Joint Program on the Science and Policy of Global Change.

PRETORIA, 14 November 2011 (IRIN) - Soaring temperatures and erratic rains brought on by a changing climate may radically alter water flows in the world’s major river basins, including the Limpopo in southern Africa, forcing people to give up farming in some areas, says a new study.

Droughts and rising sea levels could reverse efforts to improve living conditions of world's poorest people, report warns

Unchecked environmental destruction will halt – or even reverse – the huge improvements seen in the living conditions of the world's poorest people in recent decades, a major new UN report warned on Wednesday.

WASHINGTON, Oct 27 (Reuters) - The world's governments and relief agencies need to plan now to resettle millions of people expected to be displaced by climate change, an international panel of experts said on Thursday.

Resettlement related to large infrastructure development projects has been occurring for decades, with some estimates of up to 10 million people a year, said the report's lead author, Alex de Sherbinin.