India, April 6 -- Though the climate on earth has regularly been influenced by forces generated from meteor impacts, volcanic eruptions and changes in the Earth's orientation and spin, the change in global average temperature has not been so sudden. The temperature change has been gradual over thousands/millions of years, pushing the planet to hot high/ frigid low. The Holocene climate, at present, has been lasting for nearly 11,700 years, when moderate warming forces offset earth's natural tendency to move towards another severe ice-age. Use of fossil fuel since industrialization begun in 1870 have overwhelmed the interglacial cycle and greenhouse gases emitted in the process has been trapping heat that has caused a 1.4-degree Celsius ri...