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Timber
Episode 3: How Timber Works
Log cabins may be a historical footnote and fossil fuels may reign supreme, but forests remain critical natural resources. What does the future hold for Paul Bunyan's favorite industry?
Transparent Aluminum Armor
Bullet-resistant glass seems flimsy once you compare it with transparent aluminum armor. Will this new heavy-duty material soon be shielding soldiers and police officers?
Water Intoxication
Most of us think of water as the healthiest drink in the world. But in abnormal amounts, it can actually cause death. How can a liquid you need to stay alive end up killing you?
Organic Food
Organic food promises freedom from synthetic ingredients. Find out what organic food is, how organic farming works, what the pros and cons are, and why you should care.
Alcohol
Episode 5: How Alcohol Works
About two-thirds of all adults partake in this mind-altering substance, yet many do not consider it a drug. But if you've ever seen someone who's had too much to drink, you know that alcohol has profound effects on the mind and body.
Caffeine
Caffeine effects include an increase in your heart rate and an increased level of alertness. Learn more about some of the different caffeine effects.

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Quiz

Test your iron knowledge

Iron Quiz

One could safely say that we've built civilization itself on iron and its seemingly infinite uses. From early tools to trains, iron is responsible for thrusting humanity into rapid advancement. But how much do you know about the extraction process?

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