Well, here's something you don't see everyday. Back in August, grad student Todd Reichert from The University of Toronto set a new record for the longest flight of an ornithopter powered by a human being. The aircraft weighs just 94 pounds and has a 32 meter wingspan!
As its name suggests, the ornithopter is an aircraft that flaps its wings like a bird, and as you can see in the video, it needed a little help from a car towing it to get it going. But once in the air, the flapping wings took over, and the craft flew for a record 19.3 seconds.
Something tells me we won't see commercial ornithopter flights anytime soon. But it certainly is a graceful aircraft, don't you think? And in seeing how difficult it is for us humans to achieve flight in this way -- you need extremely light-weight materials, an enormous wing to payload ratio, and a tow to get it aloft -- we can appreciate the exquisite gift of flight enjoyed by our cousins, the birds... a gift bestowed on them by evolution.