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How Diesel Locomotives Work (1:15)
Trains have been around for hundreds of years, but now they use a new hybrid technology. See how diesel locomotives work in this HowStuffWorks video.
How Roller Coasters Work (1:25)
Roller coasters don't have engines, accelerators or brakes, So what makes roller coaster cars speed up, slow down and loop upside down? Get the inside track on the quintessential thrill ride.
How Drawbridges Work (1:24)
A drawbridge is a bridge over a body of water that opens up to allow boats and ships to pass through. Watch this video from HowStuffWorks to learn how it works.
Build It Bigger: Kinetic Madness (1:57)
Roller coasters use physics to create breathtaking and terrifying thrills in amusement parks across the world. Watch a video from the Discovery Channel.
Cars Without Drivers (1:04)
Watch this video about smart cars on HowStuffWorks. Despite the technical promise, experts believe most people want to remain in control of their cars, and will only use some of the features, like self-parking and safety features. See how smart cars... More »


