Renewable energy sources such as solar power, wind, biomass and hydropower could meet nearly 80 per cent of the world’s energy supplies by 2050 if governments pursue policies that harness their potential, a United Nations-backed report released today says. The findings of more than 120 researchers working with the Intergovernmental Panel on Climate Change (IPCC) indicate that if the path of renewable source is fully followed, greenhouse gas emissions could stay...

Charged particles from beyond solar system possibly affect the pace, but the extent is not clear The role of the cosmic rays has been highlightedin a paper by the former ISRO Chairman, U.R. Rao Dr. Rao points to a nine per cent reduction in the intensity of cosmic rays during the past 150 years The impact of cosmic rays on global warming needs to be assessed. Are charged particles coming from beyond the...

The environment ministry today released a paper by a senior Indian space scientist that highlights the role of cosmic rays in global warming and attempts to rekindle a 13-year debate on natural factors heating the planet. The scientific review, by Udupi Ramachandra Rao, a cosmic ray physicist and former head of the Indian Space Research Organisation (Isro), also claims the UN climate change agency overestimated the role of greenhouse gases on...

The climate talks ended with uncertainty over the continuation of the Kyoto Protocol and no agreement on binding emission reductions. The difference between optimists and pessimists is that the optimists have more fun, joked Elias Freig-Delgado, a member of Mexico's Ministry of Finance Special CO{-2} Task Force and the working groups of the U.N. High-Level Advisory Group on Climate Change Financing. Mr. Delgado was speaking at the Forest Day meeting during...

A rise in global temperatures of four degree Celsius is likely to occur during the 21st century causing "devastating impacts" if greenhouse gas emissions continue rising at the current rate, according to a group of international scientists. In a special issue of the UK journal "Philosophical Transactions of the Royal Society A" -- which coincides with the start of the United Nations climate talks in Cancun, Mexico -- scientists argue that...