New Scientist: WE'RE in trouble but there is a way out. It is still possible to prevent global temperatures from rising by more than 2 °C, but only if we part with some cash. To halt dangerous climate change, we'll need to reduce annual global emissions of carbon dioxide from the 30 gigatonnes released today to 15 gigatonnes by 2050. That's a big drop, but it can be done, according to a report from Imperial College London. To cut emissions, fossil fuels need to be replaced with low-carbon energy sources, power...