Most people don’t question the practice of eating meat. Many of these people care about animals and the environment, some deeply. But for some reason-force of habit, cultural norms, resistance to change-there is a fundamental disconnect whereby these feelings don’t translate into changes of behavior.

We're on this planet for the briefest of moments in cosmic terms, and I want to spend that time thinking about what I consider the deepest questions.

Science is the greatest of all adventure stories, one that's been unfolding for thousands of years as we have sought to understand ourselves and our surroundings.

You should never be surprised by or feel the need to explain why any physical system is in a high entropy state.

I believe we owe our young an education that captures the exhilarating drama of science.

We might be the holographic image of a two-dimensional structure.

My best teachers were not the ones who knew all the answers, but those who were deeply excited by questions they couldn't answer.