Cool Green

Efforts to stop the deepening crisis over ivory poaching / Fish fraud: A third of US products mislabelled / More than 7,500 dead pigs found in Chinese river / Keystone XL passes environmental impact report / Mars Rover finds evidence that life could have existed / 2012 saw second steepest CO2 rise since records began / President Obama appoints environment champions / Should weather forecasters talk about climate change? / Grand Prix to go electric   (Photo: Penelope Clay)