GLOBAL WARMING

Global warming is the increase in the average temperature of Earth's near surface air and oceans since the mid-20th century and its projected continuation. Global surface temperature increased 0.75+/- 0.18 C (1.33+/- 0.32 F) during the 20th century. Most of the observed temperature increase since the middle of the 20th century has been caused by greenhouse gases, which result from human activity such as burning of fossil fuel and deforestation. EVERY DAY IS EARTH DAY....