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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.

How Steam Shovels Work

science.howstuffworks.com/transport/engines-equipment/steam-shovel.htm

Antique steam shovels can still be found rusting away at old mining sites or painstakingly restored and on display in museums the world over. How much do you know about these mammoth-sized digging tools?

What’s the Difference Between a Fuel Cell Vehicle and a Hydrogen-on-Demand Vehicle?

auto.howstuffworks.com/fuel-efficiency/alternative-fuels/fuel-cell-difference.htm

A major hurdle to hydrogen-as-car-fuel is the public perception that hydrogen cars are unsafe. Read this article to find out if hydrogen cars are safe.

Ultimate Guide to the Macy's Thanksgiving Day Parade

people.howstuffworks.com/culture-traditions/holidays-other/macys-thanksgiving-day-parade.htm

Macy's Thanksgiving Day Parade is one of the largest and most popular parades in the United States. And this year is no exception.

Can You Tell What Countries These International Border Crossings Are In?

play.howstuffworks.com/quiz/can-you-tell-what-countries-these-international-border-crossings-are-in

Borders delineate the shapes of nations and the limits of their reach, culturally, militarily and in terms of natural resources. Border crossings have been flashpoints throughout history. Could you recognize them if you saw them?

Dog Parks Guide

animals.howstuffworks.com/pets/pet-travel/dog-parks.htm

Dog parks are as diverse as the breeds that use them. Learn all about dog parks in this article from Animal Planet.

Take a Drive Down Memory Lane and See If You Remember These Auto Classics

play.howstuffworks.com/quiz/take-a-drive-down-memory-lane-and-see-if-you-remember-these-auto-classics

Here's a chance to prove your mettle with these examples of classic metal! Even if you make a mistake, you'll learn about automotive history. But you won't make a mistake, right?

How Bridges Work

science.howstuffworks.com/engineering/civil/bridge.htm

Bridges support tremendous weight, span huge distances and all the while withstand the greatest forces of nature. Find out about these engineering feats (as well as some of the flaws).

Nazi Germany Conquers France: April 1940-December 1940

history.howstuffworks.com/world-war-ii/nazi-germany-conquers-france.htm

This World War II timeline highlights important dates from April 1940 to December 1940. Follow the events of World War II and the German invasion.

The Battle of the Bulge: July 1944-January 1945

history.howstuffworks.com/world-war-ii/the-battle-of-the-bulge-timeline.htm

This World War II timeline highlights events leading up to the Battle of the Bulge. Follow the events of World War II from July 1944 to January 1945.

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