Billionaire promises to get "more engaged" with efforts to tackle climate change
Investment in clean tech firms fell from 2008 levels, but is now recovering strongly
Increased government subsidies and recovering credit market more than compensate for disappointing Copenhagen Summit
Optimism mounting that solar energy IPO could open floodgates for further clean tech flotations during 2010
Uncertainty over investing in green technologies more dangerous than lack of Copenhagen treaty says Achim Steiner, the head of the UN environment programme
Competition looking for 20 UK clean tech firms to pitch to Silicon Valley venture capitalists
New study finds funds focused on ethical and low carbon investments have continued to outperform the markets despite the recession
Ernst & Young survey of multinational firms finds spending on low carbon technologies is rising as businesses seek to cut costs and manage climate risks
Senior official says carbon trading initiative to be supported by $500m in clean tech investment, as city-state sets out ambition to become regional carbon trading hub
Impax Asian Environmental Markets exceeds expectations with £104m London IPO