U.N. scientists are predicting that an increase in heat waves is almost certain this century, along with a greater frequency of natural disasters across the globe as the Earth's climate warms.

The U.N. Intergovernmental Panel on Climate Change (IPCC), has released a new report in Uganda's capital Kam-pala, urging countries to come up with disaster management plans to adapt to the growing risk of extreme weather events linked to human-induced climate change. The report allows for variables based on future greenhouse gas emission scenarios, but concludes that extreme weather is likely to increase. The report also says tropical cyclones are likely to become less frequent, but the ones that do form are expected to be even more destructive.

A Thai Muslim girl is silhouetted against floodwaters as she rides a boat on the outskirts of Bangkok, Thailand, Friday, Nov. 18, 2011.