Cities concentrate people into small areas for good reason, but this makes them major sources of greenhouse gases and uniquely vulnerable to climate risks.| MIT Climate Portal
Forests take in carbon from the air and store it in wood, plant matter, and under the soil. Restoring them is an important option for combating climate change.| MIT Climate Portal
Greenhouse gases are gases—like carbon dioxide, methane, and nitrous oxide—that keep the Earth warmer than it would be without them.| MIT Climate Portal