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What Is the Chemtrails Conspiracy Theory?
science.howstuffworks.com/transport/flight/modern/what-are-chemtrails.htm
It's hard to look up in the sky on a clear day and not see a "cloud" trailing from an airplane. They're called contrails, though some refer to them as "chemtrails" and have odd explanations for their existence.
The Bullfrog Is So Resilient, It's Invasive
animals.howstuffworks.com/amphibians/bullfrog.htm
You’ve probably heard them before you’ve seen them. The booming "jug-o-rum" call of the bullfrog (sometimes spelled bull frog) is a signature sound in North American wetlands.
13 Types of Dragons Humans Have Dreamt Up Over Millennia
people.howstuffworks.com/types-of-dragons.htm
Curious about different types of dragons? Good call. Around the world, people have imagined dragon species that range from serpent-like dragon rainmakers to winged fire-breathers that strike fear.
Ghost in the Machine: When Does AI Become Sentient?
science.howstuffworks.com/ai-sentient.htm
A Google engineer made headlines for claiming that an AI called LaMDA had become sentient or conscious. While many AI scientists disagreed, what would it take for an AI to ever become sentient?
How Concordes Work
science.howstuffworks.com/transport/flight/modern/concorde.htm
The only passenger plane that flies faster than the speed of sound, and can get from New York to London in less than four hours, is calling it quits. Learn how this amazing plane works.
How Pterosaurs Worked
animals.howstuffworks.com/extinct-animals/pterosaurs.htm
They were creatures of the air, but they aren't part of the avian family tree - and don't call them dinosaurs. What was life like for the pterosaurs, and what has sparked renewed interest in these flying reptiles?
How Handwriting Analysis Works
science.howstuffworks.com/handwriting-analysis.htm
When there's a suspect in a crime and the evidence includes a handwritten note, investigators may call in handwriting experts to see if there's a match. How exactly do experts go about analyzing someone's handwriting?
John Lear and the Dark Side
science.howstuffworks.com/space/aliens-ufos/john-lear.htm
John Lear and is one of the chief conspiracy theorists of the so-called "dark side movement", which suspects a secret government of illicit dealings with aliens. Learn more about John Lear and the dark side.
How the Snow Leopard Survives Harsh, Frigid Temperatures
animals.howstuffworks.com/mammals/snow-leopard.htm
Often called the "ghosts of the mountains," the elusive snow leopard is one of the most mysterious big cats. Found in the rugged mountain ranges of Central Asia, these beautiful animals are perfectly adapted to their harsh, cold environments.
What's Going on With Detroit's Mysterious Zug Island?
A disturbing noise, somewhere between a window-rattling bass and a brain-numbing deep thrum has bugged the heck out of residents in the city of Windsor, Ontario, Canada for years, and it's called the Windsor Hum.