Back in 1986, the world watched as the Chernobyl nuclear incident took place, and a cloud of radioactive pollution headed northwards across Europe.
Simon Oakes, writing on the IB Facebook Group page reminded us that this remains in many ways a contemporary case study, as a huge construction project is just drawing to a finish to make a steel shield that will be positioned over the damaged reactor buildings to 'seal in' any future radiation.
This Financial Times article (answer a few questions to access) outlines the work, which is costing over a billion Euros.
As Simon say in his comments:
How many more global interactions can you get, than 40 countries helping fix a trans-boundary pollution problem that affected loads of countries? None more...