National Geographic: While the residents of Majestic Mansion, a new high-end real estate development on the outskirts of Beijing, splash in their glittering blue swimming pool, residents of lakeside Danjiangkou City, just 621 miles (1,000 kilometers) away in neighboring Hubei Province, are packing up their belongings. They are leaving because the Chinese government will soon flood their village to expand the local reservoir. It turns out these two communities are tied to each other by lopsided demands for water, ... VIEW>

Researchers have developed a water-purifying filter that makes the process more than 80,000 times faster than existing filters. The key is coating the filter fabric -- ordinary cotton -- with nanotubes and silver nanowires, then electrifying it. The filter uses very little power, has no moving parts and could be used throughout the developing world. VIEW>

BBC: The Firth of Clyde in Scotland was once known for its stocks of cod, halibut and herring, but scientists have warned that it faces ecological meltdown. The decline is echoed in many other seas around the UK that have suffered as a result of over-fishing. Richard Bilton has been investigating what is happening to the wildlife in our waters.  VIEW>