How do you make an enzyme stop working? The video explains the process of denaturing enzymes. It lists many uses for this process and examples that young scientists understand from experience.

Salt is necessary for your diet, but too much or too little and it causes health problems. These problems, as well as what salt does in your body, are the focus of a video that also looks at where salt is found in food and how much salt...

It is safe to say that everything is best in moderation—including preservatives in food. Microbes and oxidation are the main reasons foods become spoiled. Thanks to preservatives, our foods end up having a longer shelf life. But what...

Are funky-looking fruits and vegetables dangerous? Not if you carefully wash them. Find out why by checking out this short video that explains the science behind the cosmetic problems.

This video provides a brief explanation of the microbes that live in the foods we love. [3:19]

Sandor Ellix Katz, self-proclaimed "fermentation revivalist" and author of "The Art of Fermentation" (Chelsea Green Publishing, 2012) discusses the two "cultures." [2:14]

Jars broke? Lids buckled? Home canning expert Jessica Piper explains common preserving pitfalls. [17 mins. 8 secs.]

The chemistry behind sausage and cheese. [17 mins. 7 secs.]