So about 20 years ago, I literally started in my garage tinkering around, trying to figure out how to separate these very similar materials from each other, and eventually enlisted a lot of my friends, in the mining world actually, and in the plastics world, and we started going around to mining laboratories around the world.
Kamu orang Amerika, kamu tidak bisa berahasia karena kamu adalah demokrasited2019 ted2019