Leonardo Da Vinci. Leonardo is arguably the world's most famous polymath. So many thoughts and so many different ideas!

There are a lot of ideas I've had that I originally was quite taken with, but over time, I lost steam. They stay on my list, but between me and you, I'm probably never going to do them.

I'm really good at building things that shoot, hurl, or throw stuff.

I travel internationally a lot and I have a hard time sleeping and staying awake normally after crossing multiple time zones, especially going east. I've tried light therapy but not found it too helpful.

I have a large standalone workshop on the back of my property where I prototype and build stuff. It's bright, roomy, and has a giant door so it's easy to bring projects in or out.

When something good hits me, I'll use Siri to make a note so I don't forget.

I specialize in science and history, with a special emphasis on including do-it-yourself projects in the mix. My dozen or so books have sold hundreds of thousands of copies. I'm also a contributing editor at Popular Science and at Make Magazine.