We keep talking about the need to reduce the greenhouse gas we produce. But how do these gases get in the atmosphere? To answer that question we need to look at what I like to call the “greenhouse gas pie,” and it turns out there are lots of ways to slice it up.
One way is to slice the pie up by the type of gases we’re talking about. There are dozens of human-produced greenhouse gases, three of them get special attention: carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O). Here’s why.