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10 Biggest Wars in History With Death Tolls in the Tens of Millions
history.howstuffworks.com/world-history/biggest-wars-in-history.htm
War has shaped human societies for thousands of years. The biggest wars in history were the armed conflicts with the largest death tolls and the widest political consequences.
10 Popular Diets: The Ultimate Science vs. Fad Showdown
health.howstuffworks.com/wellness/diet-fitness/diets/popular-diets.htm
Search trends for popular diets spike every January (and every summer). Each promises weight loss, better overall health and a clear eating plan.
9 Biggest Oil Companies in the World
money.howstuffworks.com/biggest-oil-companies.htm
The biggest oil companies dominate the global energy sector and help power the global economy. These massive oil and gas companies produce crude oil, natural gas, and petroleum products used for transportation fuels, heating, chemicals, and manufacturing.
How Diamonds Work
science.howstuffworks.com/environmental/earth/geology/diamond.htm
Diamond engagement rings. Diamond anniversary bands. Diamond earrings and necklaces. And now, the right-hand diamond ring! The four Cs -- cut, clarity, carat and color. Find out what the fuss is all about.
Early Twentieth Century Railroads
history.howstuffworks.com/american-history/early-twentieth-century-railroads.htm
Early 20th-century railroads saw major improvements in safety and comfort, as well as new regulations. Learn more about railroads in the early 1900s.
What Are the 10 Worst Torture Methods and Why?
science.howstuffworks.com/five-forms-of-torture.htm
The most prevalent forms of torture have been identified in a book by the CODESRIA organization. Learn about the most prevalent forms of torture.
How the Digestive System Works
health.howstuffworks.com/human-body/systems/digestive/digestive-system.htm
The digestive system absorbs and transports all the nutrients your body needs. Learn more about the digestive system.
How Dogfighting Works
people.howstuffworks.com/dogfighting.htm
Dogfighting is a $500 million industry and has been associated with famous rappers and athletes, such as Michael Vick. Read more about dogfighting.
Polygamy: A Comprehensive Exploration to Plural Marriage
people.howstuffworks.com/rules-of-polygamy.htm
The rules of polygamy for Fundamentalist Mormons are based on the Divine Principle. Read about polygamy rules and the practice of plural marriage.
How the U.S. Secret Service Works
people.howstuffworks.com/secret-service.htm
The Secret Service has two main missions: protecting the president and combating counterfeiting. Learn the secrets of the Secret Service at HowStuffWorks.