Where are my 3-D glasses anyway?
The USGS has created a neat Web site that allows you to look at the geology of the National Parks in 3-D. Yes, you have to wear the funky glasses with the red and green filters. There is a link on the bottom of the page that tells you where to get the glasses if you didn’t save a pair from your youth. The site also includes the same photos in standard format. This works surprisingly well over the Web.