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Are We Entering the Sixth Major Extinction on Earth?
science.howstuffworks.com/life/evolution/sixth-major-extinction.htm
A new global report says 1 million species are at risk of extinction - the greatest number in human history.
What's the Secret Behind the Numbers on the Interstate Signs?
auto.howstuffworks.com/numbers-on-interstate-signs.htm
Why is one road named I-5 while another is I-480? We take a closer look at the digits on those red, white and blue shield-shaped signs.
15 Highest-Valued NFL Teams (Post-Super Bowl LX)
entertainment.howstuffworks.com/highest-valued-nfl-teams.htm
Let's be clear about something from the get-go: These are the highest-valued NFL teams by franchise valuation, not by touchdowns
Can I get AIDS from a mosquito bite?
health.howstuffworks.com/diseases-conditions/infectious/question700.htm
Can I get AIDS from a mosquito bite?
The Oz Factor
science.howstuffworks.com/space/aliens-ufos/oz-factor-ufo.htm
The Oz Factor is a sensation that UFO witnesses experience. Learn where the term "Oz Factor" came from, and what the experience is like.
Plumbing Tools
home.howstuffworks.com/home-improvement/plumbing/plumbing-tools.htm
Some plumbing projects require specialized tools to complete the job. Read about these plumbing tools and how to use them.
How do you lock the rear differential?
auto.howstuffworks.com/lock-rear-differential.htm
To keep your wheels rotating at the same speed, you can manually lock your rear differential. Learn how to lock the rear differential in this article.
How Bridges Work
science.howstuffworks.com/engineering/civil/bridge.htm
Bridges support tremendous weight, span huge distances and all the while withstand the greatest forces of nature. Find out about these engineering feats (as well as some of the flaws).
How Rocket-Propelled Grenades Work
science.howstuffworks.com/rpg.htm
Rugged and simple, suitable for downing helicopters, disabling tanks or attacking buildings at close range -- in the hands of a skilled operator, the RPG is a lethal and versatile weapon.
How Crossbows Work
science.howstuffworks.com/crossbow.htm
The crossbow, a weapon popular with Wookiees, vampire slayers and some modern hunters, looks like a cross between a bow and a rifle. Learn how it was invented.