Global Warming

  Global warming Jump to navigation Jump to searc Some things global warming makes worse (clockwise from top left):  Wildfires ,  droughts , and  dead coral  killed by the ocean getting more hot and  acid . Global average temperature, shown by measurements from various sources, has increased since the  Industrial Revolution . Places that got warmer (red) and cooler (blue) over the past 50 years Global warming  is the current rise in  temperature  of the air and oceans. It is happening mainly because humans burn  coal ,  oil , and  natural gas ; and cut down forests. [2]  Average temperatures today are about 1 °C (1.8 °F) higher than before  people started burning a lot of coal  around 1750. [3]  In some parts of the world it is less and some more. Most climate  scientists  say that by the year 2100 temperatures will be 2 °C (3.6 °F) to 4 °C (7.2 °F) higher than th...