The mice's consumption of oxygen and production of carbon dioxide dropped ten minutes after they began inhaling hydrogen sulphide and remained extremely low as long as the gas was administered.
Last time I looked, the petition (which names Oxygen Media and production entities Electus and DiGa Vision) had about 13, 500 signatures and was gaining by the minute.
Eliminating free radical production would involve completely redesigning aspects of our metabolism, especially the way we use oxygen to extract energy from food.