Earth's early climate lacked oxygen, which made it impossible for many creatures to survive. How did Earth's atmosphere become oxygen-rich? What is the chemical composition of the Earth's atmosphere?

Scientists have always been curious about the atmosphere surrounding us, but in the past, they could not just hop on a spaceship to see what was up there. Instead, scientists hiked up high ...

A new study out this week said that the Earth's inner core is less solid than previously thought. Scientists still have questions, though.

The mystery of how the Earth’s atmosphere was formed has long baffled scientists ... The team found that the air in the rocks is partly made up of an extremely rare form of the chemical element, xenon ...

The Earth has a layered structure made up of the core, the mantle and the crust. Different elements are present in different parts of the Earth’s structure. The crust is made from enormous ...

Japanese scientists have created the first-ever long-term dataset about Earth's entire atmosphere, stretching all the way to space. They hope the project will help shed light on some little ...

How did Earth atmosphere become oxygen-rich? After some time, a simple type of bacterium developed that fermented carbon dioxide in the water and converted it to oxygen. Consequently, oxygen levels ...