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5 of the World's Most Grueling Ultramarathons
entertainment.howstuffworks.com/ultramarathons.htm
Running through extreme heat, elevation, snow or rough terrain in an ultramarathon is a challenge designed to defeat all but the most determined.
How do you build an underwater tunnel?
science.howstuffworks.com/engineering/structural/build-underwater-tunnel.htm
Underwater tunnels are so commonplace that we rarely think of the great dangers -- and extreme construction techniques -- these modern wonders require. With the opening of the Marmaray Tunnel in October 2013, it's time to take a second look.
How Mineral Baths Revive Your Skin
health.howstuffworks.com/wellness/spa-health/mineral-baths-revive-skin.htm
A mineral bath can do wonders for dry, red skin. Why does it bring your skin to life? Learn the benefits of mineral baths for skin.
10 Most Dangerous Countries in the World
people.howstuffworks.com/worlds-most-dangerous-countries-news.htm
The Global Peace Index ranks 172 independent states and territories according to their levels of peacefulness. Those that came in last may - or may not - surprise you.
The Most Beautiful Countries in the World, Sorted by Region
science.howstuffworks.com/nature/most-beautiful-countries-in-the-world.htm
Any avid traveler knows there are far too many gorgeous landscapes and jaw-dropping views to make one all-encompassing list of the most beautiful countries in the world. We're lucky to have such a diverse world, and beauty is subjective.
Can You Match These American Landmarks to Their State?
play.howstuffworks.com/quiz/match-american-landmarks-to-state
Every state has its unique landmarks, some of which are more popular than others. How well do you know the ones across your country? Let's find out!
Were the Clovis the first Americans?
history.howstuffworks.com/history-vs-myth/clovis.htm
The Clovis, ancient people who made the sophisticated Clovis projectile discovered at Clovis Indian sites, are a mystery. Read about the mysterious Clovis.
How to Protect Your Property from a Storm Surge
home.howstuffworks.com/home-improvement/household-safety/protect-property-from-storm-surge.htm
The deadliest aspect of a hurricane is the storm surge. So is there any way to protect your property from this powerful force?
Amulet of Quizzening +3 — The Dungeons & Dragons Quiz
play.howstuffworks.com/quiz/dungeons-and-dragons-quiz
Dungeons & Dragons players have been taking on the roles of mighty heroes on magical quests for more than 40 years. Level up your D&D knowledge with this Dungeons & Dragons quiz.
This Physics Quiz Is Really Hard, So We'll Be Impressed If You Get Even 10 Right
How will you REACT to this quiz? We're bringing in the big brains of physics to see if we can stump you. Do you have what it takes to pass without cheating?