Greetings from Berkeley!

I've been busy with astronomy projects, writing, and speaking. Most of my time, I'm a stay-at-home Daddy. Because of this, I'm unable to answer all my e-mail ... I read it all, but I just can't answer every letter. I've reached the point where I rarely update this web page. In advance, my apologies.

To try to head off some questions, here are some answers to common questions:

You can get the scoop on my first book, Cuckoo's Egg .

Books include Silicon Snake Oil. It's about astronomy, computers, the Internet, and getting lost in a cave. I've also written High Tech Heretic: Why Computers Don't Belong in Schools"

I make Klein Bottles -- you can see them at kleinbottles.com.

For astrophysics, check out my recent astronomy_papers