Throughout its long history, Earth has warmed and cooled time and again. Climate has changed when the planet received more or less sunlight due to subtle shifts in its orbit, as the atmosphere or surface changed, or when the Sun’s energy varied. But in the past century, another force has started to influence Earth’s climate: humanity.........................
Global Warming is caused by many things. The causes are split up into two groups, man-made or anthropogenic causes, and natural causes.
