Energy & Environment

Have you heard people talking about “Global Warming” and “Climate Change?” These topics are in the news quite a bit lately. The reason is that many scientists believe our earth is gradually warming up and some believe that human activities are one of the causes.

This warming is thought to happen because we are burning fossil fuels like oil, gasoline, coal and natural gas. When burned, these fuels release several gases, including a good bit of carbon dioxide (CO2).

We call these gases “greenhouse” gases because they act like a blanket around the earth that traps the sun’s heat. Without this blanket of greenhouse gases, more of the sun’s heat would escape to space, and not cause global warming.