Stretch your imagination and the vast deposits of scientific data on the Internet resolve into a metaphorical laboratory. The topics and sites offered here—chosen for their unbiased information—can equip you to explore the increase in atmospheric CO₂ and its environmental implications.

A quick review of the CARBON CYCLE can help you grasp how humans have affected the functioning of the atmosphere.

OBSERVATIONS FROM MAUNA LOA in Hawaii indicate a noteworthy rise in the amount of carbon dioxide in our atmosphere, which may herald warmer temperatures.

Painstaking analysis of ICE CORES FROM ANTARCTICA reveals that temperatures and CO₂ levels have risen and fallen together for centuries.

COMPUTER MODEL RESULTS show how the projected rise in CO₂ could alter conditions on Earth. They warrant a good hard look.

Why visit VENUS? Because it’s similar to Earth yet uninhabitable. The difference: An atmosphere full of carbon dioxide.

There are still SIGNIFICANT GAPS in our knowledge. Learn how scientists are trying to fill them.

Our FORUM offers you an opportunity to share your knowledge, questions, and concerns with our online audience.