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Pregnancy Nutrition Guidelines
health.howstuffworks.com/wellness/food-nutrition/facts/pregnancy-nutrition-guidelines.htm
Nutrition is of vital importance while you are pregnant. Learn how important weight gain is during pregnancy and what foods to avoid.
Thomas Edison vs. Nikola Tesla Quiz
science.howstuffworks.com/innovation/famous-inventors/edison-tesla-quiz.htm
Thomas Edison and Nikola Tesla both had amazing inventions. Find out more about this controversial duo with our HowStuffWorks quiz.
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.
How Acoustic Levitation Works
science.howstuffworks.com/acoustic-levitation.htm
The idea that something so intangible as acoustic levitation can lift objects may seem unbelievable, but it's a real phenomenon.
Catholic General Knowledge Quiz
play.howstuffworks.com/quiz/catholic-general-knowledge-quiz
Catholicism is, without a doubt, one of the most popular religions on the planet. But how much do you know about the Roman Catholic Church as a whole? Do you have faith you can pass our challenging quiz? Get out your Bible and see for yourself.
10 Worst Plants for Your Allergies
home.howstuffworks.com/gardening/garden-design/10-worst-plants-for-your-allergies.htm
Do you suffer from outdoor allergies? Check out the 10 worst plants for allergies.
Did the Library of Alexandria Really Exist?
history.howstuffworks.com/world-history/library-alexandria.htm
We can easily picture a group of beard-and-toga geniuses hunched over scrolls inside a magnificent colonnaded hall. But what was the real Library of Alexandria like? And why do some scholars doubt its existence?
History of the Roswell UFO Incident
science.howstuffworks.com/space/aliens-ufos/history-roswell-incident.htm
The history of the Roswell UFO incident has a long and complicated legacy of truth and conspiracy. Learn more history of the Roswell UFO incident.
How Space Collisions Work
science.howstuffworks.com/dictionary/astronomy-terms/space-collision.htm
Space collisions happen when stars, asteroids and even galaxies smash into one another. Learn what space collisions look like and what the results are.
Do You Know If These Garden Bugs Are Helpful or Harmful?
play.howstuffworks.com/quiz/know-these-garden-bugs-helpful
There is no doubt that bugs love gardens. Gardeners know, however, that not every bug should be welcomed with open arms. Do you know enough about bugs AND gardening to say which of these bugs are helpful and which are harmful to garden plants? Dig into the quiz and find out.