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The Anatomy of a U.S. Presidential Motorcade

people.howstuffworks.com/presidential-motorcade.htm

The U.S. president requires constant security, especially when traveling. HowStuffWorks takes a look at what goes into the presidential motorcade.

Why Gasoline Prices Vary From Station to Station

money.howstuffworks.com/why-gasoline-prices-vary-from-station-to-station.htm

Two gas stations might face each other on a street in Anytown, USA. Yet their gas prices might be different. Why is that?

Behind the Scenes at Supercross

auto.howstuffworks.com/behind-scenes-at-supercross.htm

What does it take to put on Supercross, one of fastest, high-flying motorcycle races in the world? HowStuffWorks goes there to find out.

Tidal Bores Are Rare, Fast and Have Epic Waves

science.howstuffworks.com/environmental/earth/oceanography/tidal-bores-fast-rare-epic-waves.htm

The rare phenomenon of tidal bores happens in only a few places on the globe. HowStuffWorks looks at the conditions it takes for bore tides to occur.

Do We Actually Swallow Spiders in Our Sleep?

animals.howstuffworks.com/arachnids/do-we-swallow-spiders-in-sleep.htm

Worried about creepy-crawlies entering your mouth while you sleep? Relax, spiders have no interest in being eaten. In fact, there's no record of anyone swallowing a spider while sleeping.

Why Don't We All Use the Same Time Zone?

science.howstuffworks.com/environmental/earth/geophysics/time-zone.htm

The world has only had time zones since the late 1800s. Some people think we should eliminate them and have just one universal time instead.

Why Hand-washing Beats Hand Sanitizer Hands Down!

health.howstuffworks.com/wellness/preventive-care/hand-washing-over-hand-sanitizing.htm

Health experts say washing with soap and water gets more germs off your hands than using the alcohol-based stuff. But why?

6 Charts to Help Explain Climate Change

science.howstuffworks.com/environmental/green-science/climate-change-charts.htm

The science is off the charts. Climate change is here and it's affecting the planet. We'll tell you how and where.

How to Replace Your Car's Alternator Belt

auto.howstuffworks.com/under-the-hood/vehicle-maintenance/serpentine-belt.htm

Your car's serpentine belt is a single, continuous belt that drives lots of things like the car's alternator and power steering pump. So how do you replace it when it's starting to fail?

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