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How to Easily Convert Degrees to Radians (and Radians to Degrees)
science.howstuffworks.com/math-concepts/degrees-to-radians.htm
Both degrees and radians represent the measure of an angle in geometry. So, how do you convert one to the other?
20 Most Common Surnames in the U.S. (and What They Mean)
people.howstuffworks.com/culture-traditions/genealogy/most-common-surnames-in-the-us.htm
Ever wonder what your last name says about your family's story? Turns out, some of the most common surnames in the U.S. reveal more than just ancestry; they hint at migration patterns, occupations and cultural influence across generations.
88 Constellation Names (and 24 You Can Only See From the Northern Hemisphere)
science.howstuffworks.com/constellation-names.htm
The night sky has been mapped and studied for thousands of years, with constellations serving as guides for navigation, storytelling and scientific observation. The International Astronomical Union officially recognizes 88 modern constellations, each occupying a specific section of the celestial sphere. Some date back to ancient Greek constellations, while other constellation names were introduced in the modern era.
How to Clean a Couch (and How Often)
A clean couch makes your entire living space feel fresher, but upholstered furniture can trap dirt, dust and even pet hair over time. Whether you have a fabric sofa or leather couch, the right cleaning method can make all the difference.
14 Big Lizards That Outsize Your Cat (and Many Dogs)
animals.howstuffworks.com/reptiles/big-lizards.htm
Whether they're prowling the forest floor or basking in the sun, big lizards are fascinating creatures. They come in all shapes and sizes, with some being land-dwelling behemoths and others being arboreal species that rule the treetops.
The Katydid Is a Vibrant Master of Disguise (and Nocturnal!)
animals.howstuffworks.com/insects/katydid.htm
Is that katydid a leaf? Is it an insect? Is it singing to you on a warm summer night? The answer to all of these is yes! Closely related to crickets and grasshoppers, there are over 6,000 katydid species worldwide. These masters of disguise are commonly heard but rarely seen.
The Worst Flood in History (and 9 Other Catastrophic Floods)
science.howstuffworks.com/nature/natural-disasters/worst-flood-in-history.htm
Floods have shaped landscapes, destroyed cities and taken lives for centuries. This list that starts with the worst flood in history looks at some of the most catastrophic floods in recorded history, from natural disasters fueled by heavy rain to human-engineered failures that ended in tragedy.
The Youngest Vice President in U.S. History (and 5 Close Contenders)
history.howstuffworks.com/historical-figures/youngest-vice-president.htm
Some people climb the political ladder slowly while others rocket to the top. In American history, the youngest vice president ever took office before turning 37. That’s not just early; it’s historic.
The Smartest Dinosaur (and 9 More Clever Prehistoric Reptiles)
animals.howstuffworks.com/dinosaurs/smartest-dinosaur.htm
Which were the smartest dinosaurs? While we can't sit a Velociraptor down for an IQ test, scientists use fossil evidence like brain cavity size and body ratios to make educated guesses.
The Most Dangerous Volcano in the World (and 9 Scary Others)
science.howstuffworks.com/nature/natural-disasters/most-dangerous-volcano-in-the-world.htm
Volcanoes are some of Earth’s most awe-inspiring features — but also among its deadliest. When asking which is the most dangerous volcano in the world, scientists consider not just eruption history but also population density, eruption style and potential global effects.