Facebook is quite entrenched and has a network effect. It's hard to break into a network once it's formed.

Even if there's a zombie apocalypse, you'll still be able to travel using the Tesla Supercharging system.

Biofuels such as ethanol require enormous amounts of cropland and end up displacing either food crops or natural wilderness, neither of which is good.

Physics is really figuring out how to discover new things that are counterintuitive, like quantum mechanics. It's really counterintuitive.

Trying to read our DNA is like trying to understand software code - with only 90% of the code riddled with errors. It's very difficult in that case to understand and predict what that software code is going to do.

Many things are improbable, only a few are impossible.

When I was in college, I wanted to be involved in things that would change the world.