ScienceHack is a video search engine that has a nice chunk of science related videos, I poked around a bit and they did a pretty good job of finding some of the better ones from YouTube – The video here is a time lapse of radishes growing…
Time lapse sequence shot using a digital camera set to take a frame each 14 minutes 24 seconds. The time lapse spans 9 days. Two 90 watt compact floresecent lights where used for both the camera shooting light and the grow lights. The lights were set on a timer for 18 hours on and 6 off (for the health of the plants). The jump in the video is the 6 hour gap in the darkness. Amazing how fast the radishes grew.
Science Videos Search Engine – Link.