Many cities are facing flooding problem. The world weather has changed. Global warming allows more water to be retained in the atmosphere. So much water that when it rains, it really pours. This is causing serious flooding problem in urban areas from Spain to Singapore and all over the world. Many city planners soon realised that they have reached the limited of their canals' capacity. During torrential rain, the drainage canals quickly overflow and causes serious floods. Now experts are recommending the use of holding reservoirs and green roofs to alleviate the problem.

The Missouri River, which runs from Montana to Missouri is flooding several communities along the way. Two communities in North Dakota are doing everything they can to save their homes and parts of their cities. Volunteers have come together to fill over 8 million sandbags. There is not a day that goes by that people are not thinking or talking about this flood.

More than 42 million people world-wide were forced to flee due to a series of climate change-related natural disasters in 2010, more than double the number from 2009, and a new report says extreme weather events are set to continue.