What Causes Global Warming?
Droughts, lengthy hot spells, heavy downpours, floods, and other extreme weather events are occurring more frequently and intensely every year. Around the world, research teams are analyzing these trends, noting the changes in temperature, rainfall, ice mass, sea level, and many other variables recorded by weather measuring devices.
The trends are undeniable: the Earth is getting warmer. Polar sea ice and glaciers are melting, the sea level is rising, and as the oceans absorb more and more carbon dioxide (CO2), they are becoming measurably more acidic. Why is this happening? What is the cause of all this global warming?