It really matters whether people are working on generating clean energy or improving transportation or making the Internet work better and all those things. And small groups of people can have a really huge impact.

Every quarry has two stories: the rock formation beneath and the community around it. Wise leaders listen to both.

如果易用性是唯一的要求，那么每个人都会还在骑三轮车。

动物和人类的有目的行为。

Dairy isn’t just a product; it’s a part of people’s lives.