Press Trust of India: Developed nations should pull up their socks and get “serious” about reducing carbon emissions before it was “too late”, R K Pachauri, Chairman of the UN’s Intergovernmental Panel on Climate Change (IPCC) said. “Continued greenhouse gas emissions will lead to further (global) warming of 1.8 degree Celsius to 4 degree Celsius over the 21st century,” the noted environment expert said. “The world can at best allow emissions to increase upto …