My email address is no longer at Perimeter Institute, since I'm no longer there. My institutional affiliation is with the University of New Mexico, where I'm Adjunct Professor of physics and astronomy. However, the best way to contact me is at the following email address, given in a roundabout way to discourage spam: first part is the first letter of my first name followed by the letter "n" followed by my last name (see top of this blog for my name), and then "@aol". Dot com, of, course. Nothing need be capitalized.