WebQuest Links

I really like the idea of webquests because they are an easy way for teachers that don't have a ton of in-classroom computer access. There are some great ones already out there:
Water Quality WebQuests
Best WebQuests for Science
Nature WebQuests
If searching available resources doesn't turn up what I'm looking for, I might try to create my own using WebQuest.org. My favorite thing about webquests is the possibility of creating content based on cutting edge information, which is pretty critical in the science classroom.