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How the First-Down Line Works
entertainment.howstuffworks.com/first-down-line.htm
The virtual first-down line that you see in many televised football games is something of a computer-generated miracle. Find out how this line gets 'painted on the field.
How Two-stroke Engines Work
science.howstuffworks.com/transport/engines-equipment/two-stroke.htm
A car engine uses a four-stroke cycle -- how can two strokes accomplish the same tasks? Learn all about the two-stroke engine, where it's used and how it compares to a four-stroke.
What do most sharks eat?
animals.howstuffworks.com/fish/sharks/shark-diet.htm
What do sharks eat? Sharks range in size from 8 inches long to 60 feet long. So obviously their diets vary. Learn more about what sharks eat.
Will your next car wake you up when you fall asleep at the wheel?
auto.howstuffworks.com/car-driving-safety/safety-regulatory-devices/car-wake-you-up.htm
Being asleep at the wheel is no joke, but new car technology may keep you awake. Read how being asleep at the wheel may be solved by a car that wakes you up.
The Big Dinosaur Debate: Is It an Apatosaurus or Brontosaurus?
animals.howstuffworks.com/dinosaurs/apatosaurus.htm
Apatosaurus was a sauropod of spectacular proportions. But there's a debate raging for decades about whether its genus should cancel out the Brontosaurus.
Why Did England and Spain Fight Over an Ear?
history.howstuffworks.com/history-vs-myth/jenkins-ear.htm
Jenkins' ear -- the severed ear of Capt. Robert Jenkins -- inspired a war. Learn how Robert Jenkins' ear led to a clash of monarchies in the 18th century.
Why Democrats Are Donkeys and Republicans Are Elephants
people.howstuffworks.com/donkey-elephant.htm
A donkey and an elephant are the symbols of the U.S. Democratic and Republican parties. Learn the story behind the donkey and the elephant.
Did dinosaurs have feathers?
science.howstuffworks.com/environmental/earth/geology/dinosaur-feather.htm
Did dinosaurs have feathers? Some evidence found on fossils suggest that at least some kinds did. Find out did dinosaurs have feathers?
Are Komodo dragons' mouths deadlier than cobras' venom?
animals.howstuffworks.com/animal-facts/komodo-bite.htm
Are Komodo dragons' mouths deadlier than cobras' venom? Learn about the deadly venom and bacteria that is released in a Komodo dragon's bite.
Velociraptor Wasn't the Big, Scary Monster From the Movies
animals.howstuffworks.com/dinosaurs/velociraptor.htm
The Velociraptors in "Jurassic Park" were roughly the size of humans. In reality, they were about the size of an average turkey.