Each year, humans spew billions of tons of carbon dioxide into the air. About half of it remains aloft. The rest is absorbed by ocean water and plants, slowing the buildup of CO2 and other gasses that are heating the planet.
But this natural check on global warming might not continue.
This story was supported by the Pulitzer Center on Crisis Reporting.
This segment aired on November 18, 2016.
- Climate Negotiators Respond To Trump Presidency
- Study Shows 10 Percent Decline In Global Wilderness Over 20 Years
- Physicist Says The Earth Needs To Reduce Carbon Pollution Now
- What You Can Do About Climate Change
- 'Plyscrapers' Rise As Skyscaper Architects Reconsider Wood
- Washington State Voters To Consider Country's First Carbon Tax