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Meet the Trebuchet, the Castle-crushing Catapult of the Middle Ages
history.howstuffworks.com/european-history/trebuchet.htm
Before the advent of gunpowder, enemy combatants used a powerful siege weapon called a trebuchet to forcefully launch projectiles - sometimes a large stone, a decapitated human head or a dead horse - at intended targets.
The Geology Behind 5 American Landmarks
science.howstuffworks.com/environmental/earth/geology/geology-american-landmarks.htm
The U.S. is full of exceptional geological formations. HowStuffWorks looks at at five that set the bar high as far as landmarks go.
Do hummingbirds have sex in midair?
animals.howstuffworks.com/birds/hummingbird-sex.htm
Do hummingbirds have sex in midair? Learn about the amazing hummingbird and find out if they really have to hover all of the time.
Ernest Withers: Iconic Civil Rights Photographer — and FBI Informant?
Why did famed photographer Ernest Withers betray the civil rights movement he so lovingly documented?
The Fast and Furious Peregrine Falcon Is a Midair Hunting Machine
animals.howstuffworks.com/birds/peregrine-falcons-are-one-fastest-animals-alive.htm
While the cheetah is the fastest land animal in the world, the peregrine falcon, a large predatory raptor, is by far the fastest bird on planet Earth.
There's a Rhino-shaped Cave in Washington State
science.howstuffworks.com/environmental/earth/geology/rhino-shaped-cave.htm
It's perhaps one of the strangest fossils ever discovered. We'll explain how it came to be 15 million years ago, and how hikers found it in the '30s.
The Stratosphere Is Home to Earth's Ozone Layer
science.howstuffworks.com/environmental/earth/geophysics/stratosphere.htm
The stratosphere is one of Earth's five atmospheric layers that also includes the troposphere, mesosphere, thermosphere and exosphere.
10 Cool Things About Neil deGrasse Tyson
He starred with Superman, drove the getaway car at Pluto's demise and was voted sexiest astrophysicist by People magazine. Is there anything Neil deGrasse Tyson can't do?
How Faraday Cages Work
science.howstuffworks.com/faraday-cage.htm
Thanks to the Faraday cage, we can control electricity and make it safer for our computers, cars and other inventions.
10 Completely Wrong Ways to Use Commas
people.howstuffworks.com/10-wrong-ways-to-use-commas.htm
Confused on how to use commas? You're not alone. Read about 10 completely wrong ways to use commas at HowStuffWorks.