Reduced oxygen levels lead to increased blood flow The researchers believe the boost to executive function is tied to physiological changes triggered by the reduced oxygen. When oxygen levels drop, ...

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 ...

It's no secret that Earth is doomed. Sure, there's the threat of climate change and the fact that sea levels are rising around the world. But that's not what we're talking about. Instead, our planet's ...

This sequence of events can drastically reshape how we interpret life on far-flung worlds. For example, it suggests that basing the presence of life on a planet's oxygen levels may be unsuitable. Even ...