Websites
Website put together by the US Health and Human Services branch of the government. Answers many questions about kidneys and their function.
When in doubt, learn from How Stuff Works. They will never fail you. Not even when you are searching for how the kidney works.
The perfect website to test your knowledge about kidney structure and function!
Science Daily is a great place to find interesting, current research on a bunch of topics. We found this report that talks about our good ol' friend salivary amylase and all its importance.
Current Research
Research review on how marine mammals regulate salt and water balance. When it's in the Journal of Experimental Biology, you know it's bound to be a good read.
Videos
What do we love more than Bill Nye? Bill Nye talking about digestion, of course.
Here's a cartoon video that describes digestion if it were run by microscopic bearded, British men.
The Khan Academy is a non-profit organization whose mission is to give everyone a good education. They have a lot of great videos, and here's one on diffusion and osmosis.