THE World Bank has warned the planet is on track to warm by 4 degrees this century, leading to more extreme heat waves, lower crop yields and increased flooding, possibly as early as 2060.

- All nations will suffer the effects of a warmer world, but it is the world's poorest countries that will be hit hardest by food shortages, rising sea levels, cyclones and drought, the World Bank

WB report states how climate change to hit Bangladesh; warns poorest countries to be worst sufferers

Bangladeshi capital Dhaka has topped a global list of cities facing the highest climate change risks in the coming decades, while Indian metropolis Kolkata is ranked seventh, Mumbai eighth and Delh

President Barack Obama said he plans to work with Congress in his second term to curb human-aggravated climate change, but not at the expense of the U.S. economy.

Dhaka has been ranked the top city in the world to face the highest climate change risks in the coming years.

US President Barack Obama on Wednesday vowed a new push for action on climate change, saying the United States had a duty to come together to curb emissions in the wake of megastorm Sandy.