You may know him better as Mark Darcy in Bridget Jones's Diary, but actor Colin Firth has taken on what he considers a more important role as an eco-warrior. With his wife Livia Giuggioli and her brother Nicola, Firth is now a founder of Eco, a shop dedicated to greener living, in London's Chiswick neighborhood. The store comes complete with wind turbines, solar panels and devices for collecting rainwater, and it sells everything from bamboo computers to eco-friendly kitchen appliances—but green girls might stop by to swoon while pretending to check out the planet-friendly wallpapers. —Marion Hume