What they found was that people thought the person with the whiter, straighter teeth looked healthier, younger, more well educated. Just the teeth. Same person. Whiter, straighter teeth. Everything else was the same.

Over this 99.9% of human existence, when technology advances, population advances and counterbalances any potential increase in human prosperity. Suddenly once technological progress reaches a tipping point, families start to invest in education, they economise on the number of children, and technological progress is converted into richer people rather than into more people.

To me it was an adventure. I'm a hardened explorer and adventurer, and I remember the whole mission as an adventure with some awesome experiences and beautiful sights.

Distrust in government is very dangerous – what follows is the ability for authoritarian and totalitarian forms of government to take control, and that doesn't do anybody, any good.

Our theory of change is that you need credible, authentic leaders to drive systems change. Certified B Corporations are these leaders. They're setting the example by prioritizing people and the planet over profits. They're playing by a different set of rules! And they are doing so successfully.