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Why do you have two lungs but only one heart?
health.howstuffworks.com/human-body/systems/circulatory/two-lungs-one-heart.htm
The two lungs-one heart system evolved because that was all we needed to survive. Learn more about the evolution of the two lungs-one heart system.
Diuretics 101
health.howstuffworks.com/medicine/medication/diuretics.htm
Diuretics are used to treat a wide variety of conditions. Learn about diuretics in this article and find out what conditions diuretics can treat.
Ben Hogan
entertainment.howstuffworks.com/ben-hogan-golfer.htm
Ben Hogan had to overcome many hardships to become one of golf's all-time great champions. Find out more about Ben Hogan's golfing career.
Arnold Palmer
entertainment.howstuffworks.com/arnold-palmer-golfer.htm
Arnold Palmer transcended his sport and became a national folk hero. Learn how Arnold Palmer popularized golf in the United States.
Tiger Woods
entertainment.howstuffworks.com/tiger-woods-golfer.htm
Tiger Woods is one of the most accomplished golfers of all time. Learn more about Tiger Woods and his destiny to become one of the greatest golfers.
How the Jeep Hurricane Works
auto.howstuffworks.com/jeep-hurricane.htm
The Jeep Hurricane is an extreme off-road concept vehicle. Learn about the Jeep Hurricane's dual engine design and find out how the Jeep Hurricane performs off-road.
Brussels Sprouts
home.howstuffworks.com/brussels-sprouts.htm
Brussels sprouts are small cabbage-like heads that sprout from a tall main stem. Learn how to grow and harvest brussels sprouts.
Benefits of Exercise
health.howstuffworks.com/wellness/diet-fitness/exercise/benefits-of-exercise.htm
Regular physical activity can improve heart health, strength, and endurance. Explore the many other mental and physical benefits of exercise.
Betrothed Through the Centuries: A Timeline of Marriage
people.howstuffworks.com/marriage-timeline.htm
Today's version of marriage looks very different from the unions enjoyed by our ancestors. For most of human history, marriage was more akin to a business deal between men, and the bride in question had very few rights or other options. So how did marriage become associated with love?
How Power Grid Works
entertainment.howstuffworks.com/leisure/brain-games/power-grid-game.htm
Power Grid is a board game in which players attempt to provide power to cities. Learn how the game of Power Grid Works at HowStuffWorks.