Ah, YouTube. Your first stop for prime footage of dogs driving cars and prairie dogs with gravitas. There are more educational things on there. Where else can you see a live demonstration (or ten, or twenty) on the effects of Mentos and carbonated soda?

Unbeknownst to many (maybe even your eighth period biology teacher), buried in all the hilarity and drama on YouTube, there is - gasp - educational content. The first trick is finding it. The second trick: Evaluating if it's actually any good.

If you're looking for science-related videos, your search just got a little bit easier. Enter ScienceHack, the science video search engine. These are your standard videos hosted on sites like YouTube or MetaCafe, but they are hand submitted and reviewed for their scientific content and value.

ScienceHack is still in alpha, and doesn't have a whopping amount of content (yet). It is geared toward the general public (so if you're studying for your doctorate in quantum physics, you won't find this site terribly useful). If you're a younger student, or someone with a casual interest in science, though, this will be right up your alley.

Our wish list with ScienceHack: we'd love to know a little more about who is reviewing the videos. Original sources and/or citations would also make the videos much more useful to the student. We really hope these things will come in time.

For now, though, ScienceHack is a great starting point for gathering information on a number of science topics. No sifting through the (somewhat entertaining) distractions of YouTube required.

[Thanks Rami Nasser!]