You probably remember your fifth-grade science: plants absorb carbon dioxide, which, through a process called photosynthesis, is converted into carbohydrates and oxygen.
The carbohydrates help the plant grow. The oxygen is a waste product that allows the rest of us to breathe.
Carbon dioxide, of course, is one of the biggest greenhouse gases that are contributing to climate change _ it is the second most abundant of those gases after water vapor. It would be helpful, then, to store some of that carbon in the ground, where it would not be released into the atmosphere for centuries, and then only slowly.
