Why does a paper cut hurt so much more than a cut with a razor blade?
You go to the library and check out an old book. When opening the book, you notice the pages are yellow and falling apart. Why is this happening?
How does cellulose turn into paper? What chemistry is occurring?
Why do arms sometimes fall asleep and why do they start to tingle?
Find out how scientists take a simple concept like a napkin and apply it to cutting edge technology!
What's six times lighter than steel but up to 250 times stronger?
Split ends are a common enough hair complaint, but do you know what precisely is splitting, and how, and why? In order to answer these questions and more, a quick hair anatomy lesson. Learn more on this Moment of Science.
Why does "Ouch!" always follow the "Hey"? Find out on this Moment of Science.
The thing is that hair is a lot tougher than skin. So the same chemicals that destroy the hair can also cause serious skin irritation–and possibly even chemical burns–if left on too long.
Vitamin C does a lot of good things for the body. It prevents diseases like scurvy, can lower the risk of certain forms of heart disease, and it is beneficial to people with anemia and iron deficiency.