Telegraph: The world’s biggest industrialised nations – the G8 – aren’t acting quickly enough to avert environmental catastrophe, a new study claims. Powerhouse economies, including Britain, are failing to make the drastic cuts in greenhouse gas emissions vital to combat climate change. As the biggest polluters, they had to show leadership and set an example to the rest of the world with a commitment to cut the amount of CO2 they produce by at least 25-40 per cent by 2020. The …