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 It says, if greenhouse gas emissions are halved by 30 and net zero by 50, global warming can be stopped Also, IPCC report vindicates India's position that historical cumulative emissions are the source of the climate crisis that the World faces today Greenhouse gases are a group of compounds that are able to absorb heat in the atmosphere, keeping the Earth's surface warmer by allowing Moreover, the use of this fuel does not eliminate greenhouse gas emissions altogether Safety Concerns One of reasons for discontinuance of Concorde flights were safety The July 00 accident, when an Air France Concorde crashed right after takeoff, killing all 109 people on board and four on ground, brought safety of supersonic flights into Atmospheric Methane Wikipedia Greenhouse gases names upsc