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According to data from NASA and NOAA satellites, the average area covered by the Antarctic ozone hole this year was the second smallest in the last 20 years, which scientists attribute to warmer temperatures in the Antarctic lower stratosphere.
A new satellite instrument suite is now sending back detailed information about the health of the Earth's ozone layer, the shield that protects the world’s population from harmful levels of the sun's ultraviolet radiation.
- Having no light.
- Of or relating to the region of a body of water that is not reached by sunlight and in which photosynthesis is unable to occur.