Global warming, also referred to as climate change, is the observed century-scale rise in the average temperature of the Earth’s climate system and its related effects. Multiple lines of scientific evidence show that the climate system is warming. Many of the observed changes since the 1950s are unprecedented in the instrumental temperature record which extends back to the mid-19th century, and in paleoclimate proxy records covering thousands of years.
Scenarios of climate change is displayed properly in this infographic –
Global warming is real and every threshold we cross will bring the world closer to destruction. We have to act now to save our world for the future generations.