Climate change

Before 2050, the world needs to emit 50-85 % less CO2 just to limit the rise in the average global temperature to 2–2,4 ºC says IPCC.
According to World Meteorological Organization (WMO) the global average surface temperature has risen by 0.74 ºC since the beginning of the 20th century, and the temperature has risen by 0.18 ºC over the last 25 years. An increase in the average global temperature above 2 ºC will mean more:
Water shortage
Windstorm damage
Flooding
Droughts
And other negative effects of global warming to an extent never seen before
These are some of the results of the United Nations Intergovernmental Panel on Climate Change, IPCC’s latest AR4 Synthesis Report.
From 30 November until December 2010, all UN members will meet at the Summit on Climate Change in Mexico, COP16, to discuss how to avoid IPCC’s warnings from happening and to agree on a successor to the Kyoto Protocol that expires in 2012. EU member states have already made a commitment to cut their energy consumption and CO2 emissions by 20 % on 1990 levels before 2020. If a multilateral agreement is reached, this ambition will be raised to 30 %. Some developing economies have also put forward targets for CO2 efficiency, but a number of countries still remain to make fundamental commitments.