This is the coolest science toy I’ve found on the web in some time. It’s a visual tour of sizes, from macroscopic to microscopic – be prepared to spend some time with it, and don’t be afraid to click around. In fact, you may just want to open it in a background window and let it unspool slowly across your desktop (hey, Nikon – make this into a screensaver, will ya?)
My only criticism is the regrettable lack of microscopic objects – why aren’t DNA, a cell, a protein, a tardigrade on the list?
(And for that matter, where’s the giant squid? They have a whale, after all. . . )
Thanks to inkycircus for pointing it out.