And while that conflict doesn’t make headlines, it’s displaced around 7.3 million people, making it one of the world’s worst humanitarian crises . It’s also spiked recently after a ceasefire with the ‘M23’ rebels collapsed.

Much like a good movie, life eventually forces the protagonist (whether it’s you or, say, Tom Cruise) to choose between two irreconcilable goods : a comfortable living, or a clean conscience ( The Firm ); the love of your life, or the job of your dreams ( Jerry Maguire ). And so on. The choices we make reveal who we are.

In this instance, it’ll involve a mix of ingenuity around supply chains (like using blockchain to improve traceability) and materials science (like using alternatives such as niobium from Canada or Brazil).