PBS has announced that they will soon be supplying PBS programs on Hulu, the YouTube killer created by NBC and FOX. The catch is that a single 30-second commercial will play before each episode and most programs will only be available weeks or months after they appear on TV or iTunes, where you can download them for a fee. You can already find PBS video programming online at the PBS website. However, Hulu's video technology is superior and will provide a better viewing experience with high-resolution, full-length video formats (that is, not chopped up into roughly 10-minute chapters as found on PBS.org). PBS science programs will include "Nova," "Wired Science," and "Scientific American Frontiers."