AN extreme drop in oxygen could wipe out most life on Earth, according to a scientific study. The prediction is based on past oxidation events and the idea that habitable planets don’t keep ...

Climate change is extending far beyond the threat of melting polar ice caps -- it's putting a dangerous stranglehold on life in oceans, too. A new study published in the science journal Nature ...

Dear Dr. Roach: I have COPD and have been on oxygen for about 12 years now. I recently saw a cardiologist for the first time, and he found that I have atrial fibrillation. He added Xarelto and ...