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How is carbon dioxide eliminated aboard a spacecraft?
science.howstuffworks.com/carbon-dioxide-eliminated-aboard-spacecraft.htm
To get carbon dioxide eliminated aboard a spacecraft you need a system similar to SCUBA. Learn about carbon dioxide elimination.
Mary Edwards Walker: Civil War Surgeon and the Only Female Medal of Honor Recipient
history.howstuffworks.com/historical-figures/mary-edwards-walker.htm
We'll be blunt: Mary Edwards deserves mad respect. She was a feminist and abolitionist; the first female Civil War surgeon in the U.S. Army; and a Civil War POW. Plus she wore pants!
Poisonous Death Cap Mushroom Spreads Over North America
science.howstuffworks.com/life/biology-fields/poisonous-death-cap-mushroom.htm
Amanita phalloides is non-native to the North American continent, introduced to California from Europe, and rapidly spreading.
How Gamification Works
electronics.howstuffworks.com/gamification.htm
Gamification is rapidly changing the way we interact with our world. Find out what gamification is and find out if you are already participating in it.
How PayPal Works
money.howstuffworks.com/paypal.htm
PayPal is the most popular online payment service in use today. Learn how PayPal works, how to use PayPal and about problems with PayPal.
How Capital Gains Tax Works
money.howstuffworks.com/personal-finance/personal-income-taxes/capital-gains-tax.htm
A capital gains tax must be paid anytime you sell something and make money. Learn what capital gains are and how to calculate and pay yours.
14 Weird Christmas Traditions to Perplex and Delight You
people.howstuffworks.com/culture-traditions/holidays-christmas/weird-christmas-traditions.htm
Christmas traditions are like snowflakes: No two are the same, and some are downright bizarre. Sure, Santa Claus squeezing down chimneys is strange enough, but the world is full of other weird Christmas traditions that make reindeer games look tame.
5 Great Presidential Debate Moments
people.howstuffworks.com/5-presidential-debate-moments.htm
Explore these 5 Great Presidential Debate Moments. Keep reading to learn about Great Presidential Debate Moments and the comments that made sparks fly.
Is the army testing an invisible tank?
science.howstuffworks.com/invisible-tank.htm
An invisible tank could give any military a distinctive edge on the battlefield. Find out how the British army is developing an invisible tank.
How BitTorrent Works
computer.howstuffworks.com/bittorrent.htm
BitTorrent is a popular method for downloading large files. Find out what BitTorrent does and how BitTorrent differs from peer-to-peer file sharing programs.