Human activity the reason behind climate change, reveals study
The study shows that warming began during the early stages of the industrial revolution and was first detected in the Arctic and tropical oceans around the 1830s, which was later spread to Europe, Asia and North America.
Aug 26, 2016, 10:31 AM ISTAshes from supernova explosions littered Earth's ocean floor
Some theories suggest cosmic rays from the supernovae could have increased cloud cover.
Apr 07, 2016, 22:17 PM IST