Climate Questions: Who are the big emitters?

Who made the global warming mess the world is now in? More than half of the world’s heat-trapping gases comes from three places: The United States, China and Europe.

And it piles up quickly at more than 2.5 million pounds (1.1 million kilograms) per second.

Once heat trapping gases get into the atmosphere, the effects are global. Trapping the sun’s energy doesn’t stop at national borders. But scientists can track where the gases come from and thus who is responsible.

Published by Seth Borenstein in Associated Press.