Physics interests me because it plays with different ways to think about the world. Science in general, however, is not my forte. I was trying to do some world-building for a story that takes place on a different planet, and needed to figure out the physical properties of that planet. So I asked Pär to describe some of what changes are likely if you've got air with a higher concentration of oxygen in it.

P: Hmm, let's see. Nitrogen is the biggest thing...

K: What about it? What's nitrogen got to do with air?

P: Something close to eighty percent of our air is nitrogen.

K: Nitrogen? Air is made up mostly of nitrogen? I'll be damned. Who knew?

P: Well, just about everyone, except you.

K: Look, I just breathe the stuff, I'm not hung up on all this labelling crap.

P: Mmhmm.