What is global cooling?

While many are aware of the dangers of global warming, not many know about global cooling. Scientists believe the cooling of the sun causes it. Global cooling is known for the absence of sunspot activity. According to the theory of global cooling, the sun had no sunspots between 2008 and 2009, while sunspot activity was at its peak in the 1990s. Correspondingly, this decade was the earth’s hottest since 1930.