Charles Babbage's Difference Engine was never built in his century, but two of them have been constructed in recent years and are housed at the Science Museum in London and the Computer History Museum in Silicon Valley. They're hand cranked! (Via Laughing Squid.)
It's Nikola Tesla's 153rd birthday. In that century and a half he has gone from genius to kook to genius again. Electrical engineers are just beginning to get their heads around his concept of wireless energy transmission. The upshot being that you may soon be able to power your laptop without plugging it in. He is presently thought of so highly by the corporate world that Google has posted this special birthday logo today, and a car company has taken his name.
Nick Longrich is a paleontologist at the University of Calgary and a specialist in the up till now unexplored field of teensy weensy dinosaurs. And like the great naturalists of the 18th century he can draw like you wouldn't believe. Here is an article about Nick's newly described Hesperonychus elizabethae, a little wee raptor, and here is his website containing other dinosaur artwork, including the Archaeopteryx lithographica shown above, with some nifty Photoshop tips. Douglas