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How Tunnels Work
science.howstuffworks.com/engineering/structural/tunnel.htm
Constructing a tunnel is one of the most complex challenges in the field of civil engineering. Learn about the basics behind tunnels.
Harriet Tubman's Life and Impact on the Underground Railroad
history.howstuffworks.com/historical-figures/harriet-tubman.htm
Harriet Tubman was a conductor on the Underground Railroad. But she was so much more. HowStuffWorks looks at this American legend.
African Animal Pictures
animals.howstuffworks.com/animal-facts/african-animal-pictures.htm
Many kinds of animals are native only to Africa. Check out these African animal pictures at HowStuffWorks.
The Famous Family Feud That Spawned Adidas and Puma
history.howstuffworks.com/historical-figures/family-feud-that-spawned-adidas-and-puma.htm
Brothers Adolph and Rudolph Dassler were building a sneaker empire as the Nazis rose to power. Instead of fighting the Third Reich, they battled each other.
How Sinkholes Work
science.howstuffworks.com/nature/natural-disasters/sinkhole.htm
Sinkholes are much more than holes in the ground. Learn how sinkholes can cause the Earth to swallow up you, your home and your car.
How Alligators Work
animals.howstuffworks.com/reptiles/alligator.htm
Alligators are amazing animals that have been around for millions of years. Learn about alligators and find out what makes alligators the perfect predator.
The Predatory Snakehead Fish, or 'Frankenfish,' Can 'Walk' on Dry Land
animals.howstuffworks.com/fish/snakehead-fish.htm
The snakehead fish can breathe air, double its population in 15 months and has a huge appetite, which is not a good thing for native species.
Rainbow Shark: Closer to a Minnow Than a Great White
animals.howstuffworks.com/fish/rainbow-shark.htm
Don’t let the name fool you: While it’s not a real shark, the rainbow shark definitely brings a bold, finned attitude to the freshwater aquarium.
Pictus Catfish: Bottom-feeders That Pick on Smaller Fish
animals.howstuffworks.com/pets/pictus-catfish.htm
If you're looking for an energetic, sleek freshwater fish to liven up your aquarium, the pictus catfish might be your perfect match.
Congo Snake: Legendary Serpent or Common Python?
animals.howstuffworks.com/snakes/congo-snake.htm
The Congo snake, often shrouded in mystery and myth, has captured the imagination of people around the world, particularly with tales of a giant snake reportedly sighted by Belgian pilot Colonel Remy Van Lierde during a mission in the 1950s.