Sentences with phrase «ozone shield weakening»
Not exact matches
A similar fate may have befallen forests 252 million years ago, when massive bursts of volcanic gases likely weakened Earth's ozone shield.
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This weakened shielding would have allowed more energetic particles into the upper atmosphere, which would have begun to break down the ozone layer that protects Earth from harmful UV radiation, Meert says.
From Zürich, lead author Dr. William Ball says Earth's ozone shield against harmful radiation continues to weaken — despite an improvement of big ozone holes over the Poles.
From Zürich, lead author Dr. William Ball says Earth's ozone shield against harmful radiation continues to weaken — despite an improvement of big ozone holes...
From Zürich, lead author Dr. William Ball says Earth's ozone shield against harmful radiation continues to weaken — despite an improvement of big ozone holes over the Poles.
Another study from University of California Berkeley says a weakened ozone shield 251 million years ago drove the mass extinction of forests, and all life that depended on them.