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Ethnicity vs. Race vs. Nationality: An Explainer
science.howstuffworks.com/life/genetic/race-vs-ethnicity.htm
Humans are a diverse lot - which is good! The question of ethnicity vs. race vs. nationality is a source of much debate, even among experts.
10 Possible Solutions to Air Pollution
science.howstuffworks.com/environmental/green-science/10-transportation-pollution-solutions.htm
Not only do cars produce a large portion of the world's pollution, but airplanes, boats, trucks, trains and buses also contribute to pollution. Is there one magic solution to pollution?
10 Innovations in Water Purification
science.howstuffworks.com/environmental/green-tech/sustainable/10-innovations-water-purification.htm
As far back as 1500 B.C.E., people were trying to purify water to make it drinkable. And we're still at it. Today inventors use tools as simple as clay and as sophisticated as carbon nanotubes to bring clean water to the world.
Top 10 Things That Women Invented
science.howstuffworks.com/innovation/inventions/10-things-that-women-invented.htm
By the end of the 20th century, female inventors held 10 percent of all patents, a disparity indicating the hurdles women faced in receiving credit for their ideas. The inventors on this list overcame those obstacles.
How Atom Smashers Work
science.howstuffworks.com/atom-smasher.htm
Atom smashers are used to help us discover what matter is made of. Learn about atom smashers and find out how an atom smasher works.
How Customs Works
science.howstuffworks.com/transport/flight/modern/customs.htm
To most people a trip through customs is just another stop in an airport or a country's borders. But customs agencies do much more for their countries' governments. In fact U.S. Customs raises more revenue than any agency except the IRS. Find out why and how they do it.
Top 10 Hotels That Will Scare the Daylights Out of You
science.howstuffworks.com/science-vs-myth/afterlife/top-5-haunted-hotels.htm
Haunted hotels are found in literature and movies -- we're enthralled with the idea of them. Learn more about haunted hotels and their creepy stories.
10 Nobel Laureates Whose Work Changed the World
science.howstuffworks.com/innovation/big-thinkers/10-nobel-laureates-change-world.htm
Sure, Nobel Prize winners get money, a medal and bragging rights, but the rest of us often benefit from their accomplishments, too. Meet 10 of these game-changing people.
10 Unsolved Airplane Mysteries
science.howstuffworks.com/transport/flight/modern/10-unsolved-airplane-mysteries.htm
Since 1948, more than 100 aircraft have gone missing while aloft and never been found. Here are 10 unsolved airline mysteries from HowStuffWorks.
How Area 51 Works
science.howstuffworks.com/space/aliens-ufos/area-51.htm
Less than 100 miles from Las Vegas, is the most famous secret military installation on the planet: Area 51. For decades, the U.S. government refused to acknowledge it existed. But now, the secret is out.