Courier Mail: AUSTRALIAN scientists are looking underground to test controversial techniques that aim to find a cleaner future for coal and gas, Kerrie Sinclair writes. Millions embrace darkness tonight to highlight their concern over climate change. But there’s no light yet shed on which energy sources can support a plugged-in lifestyle without frying the planet. Annual emissions of carbon dioxide – the most important of the greenhouse gases causing temperature rises – have surged by 80 per …