Explore the layers of the atmosphere depicted to scale, including the Troposphere, Stratosphere, Mesosphere, Thermosphere, and Exosphere. Discover what occurs in each layer. This video is available ...

First, as I mentioned, is the troposphere. This is the lowest layer of the atmosphere, where all weather occurs. It begins at the ground, and extends upward to about 6.2 miles above earth’s surface.

If scientists of the 19th century could have used modern tools to study the atmosphere, they might have noticed the early ...

In a feedback of fire and ice, thinning ice sheets over geologic hot spots could allow more eruptions, while increased ...

Debris from rockets and satellites can fall back to Earth or collide with other objects, and wreckage that burns up can harm ...