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How Wind Tunnels Work
science.howstuffworks.com/wind-tunnel.htm
Wind tunnels are the unsung heroes of aerodynamics, leading to safer planes, cars and space vehicles. Learn how wind tunnels work.
10 Ways Americans and Europeans Differ
HowStuffWorks looks at come of the cultural differences between Europe and America, like ice consumption, metric system and portion sizes.
UFOs and the Government
science.howstuffworks.com/space/aliens-ufos/ufo-government.htm
Project Sign was the first major government UFO investigation project. Read how Project Sign began and the history of UFOs and the U.S. government.
What Are the 17 Symptoms of PTSD?
science.howstuffworks.com/ptsd.htm
Post-traumatic stress disorder was first described by a doctor treating patients during the Civil War. Learn about post-traumatic stress disorder.
13 of the World's Most Infamous Cults
people.howstuffworks.com/10-infamous-cults.htm
Maybe you've heard about drinking the Kool-Aid or listening to The Family Jams - but what do you really know about some of the world's most infamous cults?
¿Puedes nombrar todos estos presidentes de México?
play.howstuffworks.com/quiz/can-you-name-all-of-mexicos-heads-of-state
¡Este es un reto para todos los expertos en historia de México! ¿Crees que puedes nombrar 40 presidentes mexicanos con solo ver su foto? Si es así, nos dejarás con la boca abierta.
NASA's 10 Greatest Achievements
science.howstuffworks.com/ten-nasa-achievements.htm
NASA's 10 greatest achievements range from technical feats to displays of human ingenuity. Learn about NASA's 10 greatest achievements.
10 Unusual and Rare Flowers You Won't Find in Most Gardens
home.howstuffworks.com/gardening/garden-design/10-most-unusual-flowers.htm
Flowers are a matter of pride for gardeners, a means of expression for lovers and they play a role in some of our most joyous and somber societal rituals. But not all flowers are bright colors and perfumed scents. Some are quite unusual.
Bird-Watching Projects for Kids
lifestyle.howstuffworks.com/family/activities/bird-watching-projects-for-kids.htm
These bird-watching projects for kids are a great introduction to the hobby of birding. Learn about some interesting bird-watching projects for kids.
11 of the World's Worst Serial Killers
people.howstuffworks.com/10-worlds-most-prolific-serial-killers.htm
Some serial killers have murdered more than 100 people. Who are the worst serial killers, and why did they do it?