When the sun's super-flares hit the cold earth's atmosphere four billion years ago, it gradually became more hospitable to life.
Climate scientist Ed Hawkins posts a visual animation showing global warming spiralling rapidly out of control. It has gone viral on the Internet.
Scientists examine whether a shift to vegetarianism would benefit the world or not.
Greenhouses are increasing over the Earth's surface area and CO2 is the prime factor, suggests the first direct observation. The observation backs the hypothesis that was developed by computer designs and lab experiments, years ago.
