Endless Facts, One Snippet at a Time
The Greenhouse Effect: Chemistry Behind Climate Change
- The greenhouse effect keeps Earth warm enough for life by trapping heat in the atmosphere.
- Gases like carbon dioxide, methane, and nitrous oxide act like an insulating blanket.
- Sunlight enters Earth’s atmosphere, but greenhouse gases slow down the escape of heat.
- Without the greenhouse effect, Earth’s average temperature would be below freezing.
- Human activities—like burning fossil fuels—add extra greenhouse gases to the air.
- Carbon dioxide levels are the highest they’ve been in hundreds of thousands of years.
- Methane is more powerful than CO₂ at trapping heat, though it’s less abundant.
- Water vapor is the most abundant greenhouse gas, amplifying warming through feedback.
- The chemistry of aerosols can both cool (by reflecting sunlight) and warm (by absorbing heat).
- Understanding greenhouse chemistry helps scientists predict and combat climate change.