Presidential hopeful joins rivals Rick Perry and Michelle Bachmann in voicing doubts over climate science
The future of US efforts to curb greenhouse gas emissions depends upon the result of next year's presidential election, after Republican presidential candidate Mitt Romney became the latest primary frontrunner...
Check out all the winners and highly commended finalists from the second annual BusinessGreen Technology Awards
James Murray's speech to the second annual BusinessGreen Technology Awards
The former Energy and Climate Change Secretary opens up about the benefits of regulation, his hopes for a solar-powered future, and his rows with George Osborne
Four world cities make radical commitment at C40 Mayors Summit in Mexico City in a bid to combat urban air pollution