Case Study: The Ozone Hole

If we listen to the news about global warming and politics it can feel a little overwhelming. Will governments in different countries ever listen to each other to make good changes for our planet?

Well the thing is, they have done it before.

How the world came together for the ultimate repair job...

Why you don’t hear about the ozone layer anymore In the ’80s, scientists discovered there was a hole in the ozone over the South Pole. Projections suggested it would collapse by 2050, increasing skin cancer rates, harming crops, and destroying the marine food chain. The situation was dire. So, why don't we hear about the ozone layer anymore? Vox breaks down how we managed to fix this huge problem.

Watch this video (if you are doing this by yourself at your chromebook, please use headphones!

What is a Dobson Unit?

Dobson Units are a way of measuring the concentration of ozone in our sky. Similar to how a mm is a unit of measurement for a distance, DU is a way of measuring how 'thick' the ozone is over the earth.

Look at the image below. The colour shows the 'thickness' of the ozone layer by using Dobson Units. Black would be bad (0 DU), Blue is pretty bad. Green is ok. And red is good.