This model reveals how vastly different the atmosphere was on ancient Earth, and how life may have first emerged. The key to unlocking the secrets of distant planets starts right here on Earth.

Fossils and ice cores are fine if you want to study the past 2 billion years, but if you want to look at Earth's deep past, ...

Look up on a clear night and you'll see the streaks of our new space age. What you don't see is the growing fallout for the atmosphere that keeps us alive. A wave of satellite launches and reentries ...

The new study led by biogeochemist Sean Crowe has found surprising evidence that as far back as three billion year ago, there were levels of oxygen in the atmosphere too high to have been produced ...

The oxygen in Earth's atmosphere is key to making ours the only planet known to harbor life, but this precious resource is in limited supply. Although it is the best-known component of the air we ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and ...

Just before 9 a.m. EDT on March 17, a meteor entered the atmosphere over Lake Erie and caused a sonic boom recorded on video ...