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How Your Lungs Work

health.howstuffworks.com/human-body/systems/respiratory/lung.htm

You couldn't breathe without your lungs and you do it without even thinking about it. So, how do your lungs manage this amazing feat?

How Gliders Work

science.howstuffworks.com/transport/flight/modern/glider.htm

Flying in a glider is about as close as you can get to soaring like a bird. Amazingly, these graceful machines manage their maneuvers without an engine. Learn how gliders fly without power.

What is an appendix and what causes appendicitis?

health.howstuffworks.com/human-body/parts/question141.htm

What is an appendix and why can it be removed without causing a problem?

What If Cows Didn't Exist?

science.howstuffworks.com/science-vs-myth/what-if/what-if-cows-didnt-exist.htm

A world without cows would be a world without burgers, right? Yes, and to beef eaters that's bad news, but it would also be a world with less methane. So would losing all cows be worth it?

How Bulletproof Are Bulletproof Vests?

science.howstuffworks.com/how-bulletproof-are-bulletproof-vests.htm

Without question, they save lives - but they aren't 100 percent failsafe.

How Bluetooth Works

electronics.howstuffworks.com/bluetooth.htm

Bluetooth allows electronic equipment to connect without wires. So how does it work?

How DSL Works

computer.howstuffworks.com/dsl.htm

Digital subscriber line (DSL) technology transmits data over phone lines without interfering with voice service. Find out how DSL uses extra bandwidth to provide a fast Internet connection without taking over your phone.

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 Long Would You Have Survived in the Stone Age?

play.howstuffworks.com/quiz/how-long-would-you-have-survived-in-the-stone-age

Many find it challenging to imagine life without smartphones and internet access. What about a world without electricity or running water, though? Find out how long you'd survive in the Stone Age when you take the following quiz!

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