USA

Fears of trade war mount as officials meet in Washington D.C. to try and end deadlock

GOP tables new bills to approve Keystone XL pipeline, increase drilling, and cut energy industry regulations

First grid-connected, commercial-scale tidal device set to come online in October off the coast of Maine

Nearly 400 military members sign letter insisting research on alternative fuels for military use is vital to national security

Around 40 per cent of shareholder resolutions in 2012 proxy season address environmental and social issues, say analysts

Experiment in New Mexico will try to establish the possibility of cooling the planet by dispersing sulphate aerosols

Study calculated each country's efforts to reduce energy use in industry, transport, and buildings as well as overall policie

Decision looms on whether to force firms to disclose information on their use of conflict minerals

City of San Francisco vows to stop buying Apple products after IT giant shuns eco-labeling scheme

US-based building directory service to bring TripAdvisor-style green building service to the UK