Women work on a wooden fence at the Centre for Alternative Technology in Machynlleth, Wales March 25, 2010. The Centre for Alternative Technology (CAT), a sprawling eco-complex set up during the 1974 oil crisis, will publish proposals in June to eliminate emissions from oil, gas and coal. While Britain was the first country to set legally-binding targets to cut emissions, by 80 percent from 1990 levels by 2050, CAT's strategy goes even further. Picture taken March 25, 2010. REUTERS/Stefan Wermuth (BRITAIN - Tags: ENVIRONMENT SOCIETY)