1.1M views · 8.7K reactions | The extreme thinning of the Ozone layer threatened to destroy ecosystems and accelerate skin cancer rates. So, what happened? | NOVA l PBS | Facebook

What's going on with the hole in the ozone layer? Thanks to a global effort to regulate ozone-depleting substances, the ozone hole is showing signs of recovery and is projected to return to a healthy level by mid-century. However, at NASA, scientists continue to monitor its progress. NASA’s Goddard Space Flight Center Qing Liang explains more. Keep up: https://go.nasa.gov/3DhEBvp | NASA - National Aeronautics and Space Administration