We love the powerful ideas and conversations that TED shares with the world. In 2014, amazing discoveries were made in areas ranging from exploration and technology, to arts, politics and human rights. Our very own astronaut Col. Chris Hadfield made TED’s list of 2014’s biggest ideas, alongside some amazing thinkers, doers and leaders.

Watch Chris Hadfield on “What I learned from going blind in space”:

You can find other incredible TED talks from 2014 here: http://yearinideas.ted.com/2014/