(Mosaic Video Alert: August 17, 2010) UN officials say that the humanitarian situation in Pakistan is one of the most serious they have ever experienced. Many of the 20 million people affected by floods have yet to receive any aid, and the relief operation is underfunded. Part of the problem is in the country’s destroyed infrastructure, but the UN has also called for further financial assistance.Learn more about how you can help Pakistan recover from the recent floods.