Operators follow a 25-year rule: at this point, a satellite’s mission is deemed to have ended and it is lowered into the ...

This is a comparatively dry atmospheric layer associated with weather balloons, high-altitude planes, and polar stratospheric clouds—as well as the ozone layer. Credit: Crystal-K/Getty Images ...

Two of Earth’s five confirmed mass extinction events could have been caused by nearby supernova explosions stripping the ...

Ozone is a protective atmospheric layer found at an altitude of about 25 kilometers (15.5 miles). It acts as a sunlight filter, shielding life on Earth from harmful ultraviolet rays that put ...

Human-induced destruction of the stratospheric ozone layer — which lies between 10 and 50 km altitude — was first detected in the mid 1980s, and has remained a serious environmental concern ...

Atmospheric physicists Paul Newman and Luke Oman built a simulation of the Earth’s atmosphere and then proceeded to strip away our protective ozone layer. Their computer model reproduced the chemistry ...

They then compared the results of various simulations to see how the Antarctic ozone layer changes with season and altitude, and combined these with satellite observations of the Antarctic ozone ...

The ozone layer shields the Earth from most of the ... Instead, it's down to the polar vortex, the high-altitude currents that normally bring cold air to the polar regions. This has split in ...

The Arctic is one of the regions most strongly affected by climate change. In recent decades, the temperature there has risen ...