A layer of charged particles, called the ionosphere, surrounds Earth, extending from about 50 to 400 miles above the surface of the planet. Disclaimer: AAAS and EurekAlert! are not responsible for ...

Scientists cannot be sure about the composition of the early atmosphere. No measurements can be made, so scientists must analyse indirect evidence from other sources. Type of Evidence What it ...

By the early 1900s, scientists had identified major layers of the atmosphere based on how the temperature changed at different levels above the sea. Thanks to these studies, we now know the five ...

Scientists cannot be sure about the composition of the early atmosphere. No measurements can be made, so scientists must analyse indirect evidence from other sources. Type of Evidence What it ...

Human activities have been the main cause of rising carbon dioxide levels in our atmosphere since the 1800s. The emergence of life on our planet added a new layer to the carbon cycle. As plants grow, ...

The concentration of carbon dioxide in the atmosphere is at its highest point ... and the first to surpass 1.5C above pre-industrial levels. In an annual assessment of the climate, the UN ...

Almost two decades ago, the atmosphere’s levels of methane — a dangerous greenhouse gas that is over 80 times as potent as ...

In Venus' atmosphere, scientists have observed a spike ... The idea is further supported by comparable levels of other elements, such as carbon and nitrogen. After looking at data collected ...