Climate change

     
      [1]Climate change is a significant and lasting change in the statistical distribution of weather patterns over periods ranging from decades to millions of years. It may be a change in average weather conditions or the distribution of events around that average.

      Climate changes in response to changes in the global energy balance. The decline in Arctic sea ice, both in extent and thickness, over the last several decades is further evidence for rapid climate change.





Video about climate change:


Sources.
[1]http://en.wikipedia.org/wiki/Climate_change