The United States is the world's biggest producer of carbon dioxide. For every person in the U.S., twenty tons of carbon dioxide is released into the atmosphere every year!
Here is a closer look at the history of Earth's climate, how global warming is happening, and why it is a problem. There's also a section on what you can do to help.
Questions
What caused a temporary cooling of Earth in 1991?
How does the burning of fossil fuels raise Earth's temperature?
Which regions of Earth are predicted to warm the greatest during the next 30 years? What effect could this have on Earth's sea level?
The EPA is the Environmental Protection Agency, the part of our government that watches the environment and works to protect it. Their site has lots of information about this problem.
Questions
How much has the global sea level increased over the past century? How much has the global temperature increased?
Name three threats to agriculture that global warming could pose.
