carbon dioxide

The Trump administration wants to reverse a rule that would have required new coal plants to have expensive technology to capture their carbon dioxide emissions.

The fortuitous dip in emissions of the main greenhouse gas, carbon dioxide, during the past three years is over, as economies turn up. The trend in the near future looks grim, say climate scientists.

Nutrients in crops fall as carbon dioxide rises. People who don't get enough of the right nutrients are more likely to get sick. Researchers have now estimated the effects.