Microscopic ocean algae produce a huge share of Earth’s oxygen—but they need iron to do it. New field research shows that ...

Oxygen is one of those non-negotiable items in life. You can skimp on food, sunlight and, in emergency situations, morning coffee, but you can’t last more than a couple of minutes without oxygen. The ...

We’ve all been there. Stressed out, tired, or struggling to catch our breath during a new fitness class. So, what if we told ...