SciTechDaily
The Ozone Layer: A Hole New World [Video]
![Ozone Hole 2020](https://scitechdaily.com/images/Ozone-Hole-2020-373x210.gif)
In the 1980s, scientists discovered a gaping hole in Earth’s ozone layer, caused by humanmade chemicals. But thanks to the historical Montreal Protocol, the world...
from SciTechDaily https://ift.tt/5LQx826
Post a Comment
0 Comments