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How Photosynthesis Captures Light and Powers Life on Earth
science.howstuffworks.com/life/cellular-microscopic/photosynthesis.htm
No life, except possibly very small bacteria, would exist on Earth without photosynthesis.
How to Pass a Breathalyzer: Can a Penny Help?
So you've been pulled over by the police, and they've put a breathalyzer in your face. You've heard urban legends that address how to pass a breathalyzer, but are any of them true? Find out right now!
Cadmium: The Highly Toxic Metal That Powers the World
science.howstuffworks.com/cadmium.htm
Cadmium is a natural metal and the leading component in rechargeable batteries and solar cells. It is also highly toxic and heavily regulated.
How to Clean Jewelry of All Types
Jewelry can lose its shine over time due to dirt, oils and everyday wear, but a good cleaning can restore its sparkle. Whether you have solid gold, sterling silver jewelry or costume jewelry, knowing how to clean jewelry properly helps maintain its beauty.
Could alcohol cause my headaches?
health.howstuffworks.com/diseases-conditions/headache/cluster-headache-pain-can-be-relieved.htm
Cluster headache pain can be triggered by alcohol. Learn more about cluster headaches and alcohol from Discovery Health.
How Reverse Osmosis Works
science.howstuffworks.com/reverse-osmosis.htm
How does reverse osmosis work? Find out how a semipermeable membrane can act as a filter for some particles while letting others pass through.
How Hair Coloring Works
science.howstuffworks.com/innovation/everyday-innovations/hair-coloring.htm
Got a few grays? Just want a new look? Well, if you are like 75 percent of women, you're part of a billion dollar industry. Learn all about hair coloring and choosing the best color for you.
How Fabric Displays Work
electronics.howstuffworks.com/gadgets/high-tech-gadgets/fabric-display.htm
Fabric displays are revolutionizing the marketing and fashion industries by incorporating LED lights into the fabric. Learn more about fabric displays.
What Is A Stryker Vehicle?
science.howstuffworks.com/stryker.htm
The U.S. Army's Stryker is a lesson in flexibility: There are as many Stryker configurations as there are tasks to complete in today's military. Plus, it's easier to deploy than the mighty M1. Learn all about the Army's ambitious Stryker project: anywhere in the world within 96 hours.
6 Tips for Starting an Old Engine
auto.howstuffworks.com/5-tips-starting-old-engine.htm
Engines were made to run; but if you've ever tried to start an old car that's been sitting unused for a long time, you know that it isn't always as easy as just turning the key.