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Do whales and dolphins sleep?
animals.howstuffworks.com/mammals/question643.htm
Whale sleep patterns are different from land mammals in that they are never really unconscious when they sleep. Learn about whale sleep patterns.
How to Get Rid of Bleach Stains
home.howstuffworks.com/how-to-remove-chlorine-stains.htm
Understanding what causes bleach stains is crucial for effectively removing them and preventing future mishaps.
Why does my skin get wrinkly in water?
health.howstuffworks.com/skin-care/information/anatomy/skin-wrinkly-in-water.htm
Why does my skin get wrinkly in water? Visit HowStuffWorks to learn more about the causes of why skin gets wrinkly in water.
How the Mohs Scale Ranks Hardness
science.howstuffworks.com/environmental/earth/geology/mohs-hardness-scale.htm
The Mohs hardness scale is used by geologists and gemologists as a way to help identify minerals using a hardness test. How does it work?
The Ultimate Pacific Ocean Quiz
play.howstuffworks.com/quiz/pacific-ocean-quiz
This Pacific Ocean quiz will test your knowledge of the world's biggest ocean. Test yourself with this Pacific Ocean quiz.
Why Are Air-dried Towels So Stiff?
science.howstuffworks.com/air-dried-towels.htm
A research team has found that water acts strangely on an air-drying towel, which contributes to its signature stiffness.
How Do Spacecraft Re-enter the Earth's Atmosphere?
science.howstuffworks.com/spacecraft-reentry.htm
Spacecraft reentry into the Earth is a tricky process. Find out how spacecraft re-entry works and why spacecraft are likely to burn up upon re-entry.
How to Maintain a Clean Cutting Board
Maintaining a clean cutting board is vital in cooking. Visit TLC Cooking to learn about maintaining a clean cutting board.
Could we really blow up an incoming asteroid with a nuclear bomb?
science.howstuffworks.com/asteroid-nuclear-bomb.htm
Surely nuclear weapons, which can obliterate entire cities, contain enough destructive power to blow a giant space rock to bits, right? What does NASA make of the whole explosive business?
For the Benefit of All: The NASA Quiz
play.howstuffworks.com/quiz/nasa-quiz
The National Aeronautics and Space Administration has been exploring space for more than 50 years. How much do you know about the scientists, engineers, pilots and machines that carried America into space?