The Ealing Beaver Project is the UK's first fully urban beaver enclosure.
Five Eurasian beavers were released into a 20-acre nature reserve near Ealing station.
The beavers slowed water, raised water tables, built ponds and created messier, wetter habitat.
Researchers found that beaver wetlands could hold water back during heavy rain, reducing peak flows downstream.
A customized collection of grant news from foundations and the federal government from around the Web.

In the world of social enterprises, failure is a cringe-worthy moment nobody wants to talk about. But, social entrepreneurs can benefit from their failures.