Every decision you make, from what you eat to what you do with your time tonight, turns you into who you are tomorrow and the day after that.

From space, the Bahamas is the most beautiful place on Earth.

I've had a chance to fly a lot of different airplanes, but it was nothing like the shuttle ride.

Scientific literacy is one of the underpinnings of everything I do. It's why I work with schools. It's why I teach at university. I do a lot of outreach to try and improve general scientific literacy, but the core of all scientific literacy is just literacy.

The danger is different from the fear. ... [practice] what to do if things go wrong, as well as right.

My favourite city for nightlife is Toronto, as it has such a multicultural feel, with so many different restaurants and theatres.

I've been lucky enough to fly to space twice.