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Your search for "tunnels" returned 128 results
How Baggage Handling Works
science.howstuffworks.com/transport/flight/modern/baggage-handling.htm
Inside an airport, luggage moves through an amazing and intricate system. The baggage handling system plays a crucial role in keeping travelers happy. Learn about these high-speed carts and conveyers.
How Dark Matter Works
science.howstuffworks.com/dictionary/astronomy-terms/dark-matter.htm
For decades, stargazing scientists have been facing their own darkness on the edge of town as they try to explain one of astronomy's greatest mysteries: dark matter. Have they been successful, or will the universe carry its secrets for a long time?
How Archaeology Works
science.howstuffworks.com/environmental/earth/archaeology/archaeology.htm
Archaeology is the study of ancient civilizations and human remains, such as buildings, art or trash. Learn about archaeology and archaeologists.
How Cave Biology Works
science.howstuffworks.com/life/biology-fields/cave-biology.htm
Cave biology is the study of the animal specimens that live and evolve in caves. Learn about cave biology and cave animals in this article.
What Are Mines?
science.howstuffworks.com/engineering/structural/underground-mining.htm
Underground mining has come a long way from the days of men with pickaxes and canaries. It relies much more heavily on machinery that makes it much safer than in the past. Which techniques are used in mining today?
When Were the Twin Towers Built?
science.howstuffworks.com/engineering/structural/wtc.htm
The twin towers of the World Trade Center were true originals -- their history is one of innovation, persistence and grand ideas.
5 Discoveries Made by the Large Hadron Collider (So Far)
science.howstuffworks.com/5-discoveries-made-by-the-large-hadron-collider-so-far-.htm
The Large Hadron Collider isn't just a one-trick (Higgs) pony. Find out what else has happened where hundreds of millions of particles may collide any given second.
10 Ideas for a Green Transportation Infrastructure
science.howstuffworks.com/environmental/green-science/10-ideas-green-transportation.htm
The idea behind a green transportation infrastructure is one that provides opportunities for people to get around their communities using their own power -- such as walking or biking. In this article we 10 ideas for greener transportation.
How Green Pavement Works
science.howstuffworks.com/environmental/green-science/green-pavement.htm
Green pavement is porous, meaning that it permits water to seep through to the ground. Learn why green pavement is good for the environment.
How Sand Dunes Work
science.howstuffworks.com/environmental/earth/geology/sand-dune.htm
Sand dunes are more intriguing than you might think. For one, some sand dunes sing. What other interesting facts can you learn about sand dunes?