So why do so many life-forms breathe oxygen? There are probably thousands of kinds of metabolisms, or chemical processes that ...

It is widely believed that Earth's atmosphere has been rich in oxygen ... and the whiffs are an indication of this taking place. Take a deep breath. Do you ever think about the air entering ...

The atmosphere is like an invisible cloak enveloping our planet, a silent guardian that shapes our daily experiences in ways ...

Here are scientists’ plans Earth’s atmosphere remains stable enough ... it can be toxic and cause shortness of breath or even fluid in the lungs. Climate change caused by human activity ...

As soon as she took the first breath, her feet started trembling ... feeling gravity When the Dragon capsule entered the Earth's atmosphere, its temperature reached 1,600 degrees Celsius.

Gabrielle Walker tells the remarkable story of how we discovered that the air around us is not just empty space, it is full of hidden wonders.