Ozone as a layer several kilometers up in the atmosphere protects living beings, including humans, from ultraviolet rays. But its accumulation at ground level can be very dangerous, Mongabay ...

This story originally appeared on Yale Environment 360 and is part of the Climate Desk collaboration. Sequoia National Park’s famous groves of stout, 300-foot-tall trees sit high on the western side ...

Located kilometres above the Earth’s surface, the ozone layer protects humanity and all life from the sun’s harmful ultraviolet rays. But in the troposphere, at ground level, this gas can wreak havoc ...