If we over-breathe we lose carbon dioxide. The tissues then become starved of oxygen and then our body's systems start to spasm -it's then that we run into all sorts of health problems.

Organisms in the ocean provide over 40 percent of the oxygen we breathe, and they're the major sink for capturing all the carbon dioxide we constantly release into the atmosphere.

In the course of my stay there, I also showed how one could analyse the experimental kinetic curves for the reaction of haemoglobin with carbon dioxide or oxygen by simulations in the computer, and so fit the rate constants.

Carbon dioxide is natural. It is not harmful. It is part of Earth's life cycle.

Limonene has been around forever, carbon dioxide as well. What we've been able to do is devise this catalyst for the first time that allows these two small molecules to come together to make a plastic.

Limonene has been around forever, carbon dioxide as well. What we've been able to do is devise this catalyst for the first time that allows these two small molecules to come together to make a plastic,