National Science Foundation
To What Degree What Science Is Telling Us About Climate Change
Leading climate change experts discuss one of the most complex scientific puzzles ever to confront humankind.

 

NSF.gov
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Leading climate change experts discuss one of the most complex scinetific puzzles ever to confront humankind. How do we know the earth is warming? How do we know the warming is caused by rising levels of carbon dioxide? How close are we to having all the answers?

Earth's Heat Balance How does the sun’s energy get into the climate system? How does heat get distributed around the world? How are scientists monitoring carbon dioxide around the globe? What about indirect effects of greenhouse gasses? Do they increase warming or reduce it? What role do clouds play in warming or cooling the earth? What are aerosols and will they warm or cool the planet? Can aerosols be used to slow the warming of the planet?

Meet the Experts