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Test your knowledge of the fifty nifty United States

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Each of the fifty majestic states of America has its own personality, history and idiosyncracies. In this quiz, you will test your knowledge of some of the most fascinating​ and fun facts about each state, from Alabama to Wyoming. You're on the fast track to becoming an Americana genius!

10 Reasons Why Tesla Is a Scientific God

science.howstuffworks.com/innovation/famous-inventors/10-reasons-tesla-is-scientific-god.htm

He had patents and pigeons galore. His role in history books could be more. So come ye science fans, and read up on your Tesla facts, myths and lore.

Arizona's Grand Falls Gushes to Life Again

science.howstuffworks.com/environmental/earth/geology/grand-falls-arizona.htm

Arizona isn't all desert. Take Grand Falls, aka "Chocolate Falls." It is dry most of the year, but when it rains, this waterfall pours.

10 Longest Rivers in the U.S.: From the Missouri to the Brazos

science.howstuffworks.com/environmental/earth/geophysics/longest-river-in-the-us.htm

We bet you're looking up the longest river in the U.S. to settle a bet: Is it the Missouri River or the Mississippi River? It depends how you measure.

Are poinsettias poisonous?

home.howstuffworks.com/are-poinsettias-poisonous.htm

The poinsettia's poisonous rep might be a bit unfair. Find out if poinsettias are poisonous at HowStuffWorks.

Fallout: What Would Happen if the Hoover Dam Broke?

science.howstuffworks.com/engineering/structural/hoover-dam-broke.htm

The Hoover Dam holds back 10 trillion gallons of water. That's enough to cover the entire state of Connecticut. How much damage would be done if the dam broke?

The Incredible True Story of the Real 'Black Klansman'

history.howstuffworks.com/historical-events/incredible-true-story-real-black-klansman.htm

HowStuffWorks tells the story of Ron Stallworth, the black police officer who infiltrated the KKK, and the subject of the movie 'BlacKkKlansman.'

Is spinach really a good source of iron or not?

science.howstuffworks.com/innovation/edible-innovations/spinach-good-source-of-iron.htm

Comic book character Popeye is synonymous with being strong thanks to all the iron in the spinach he eats. But lately, there's been some talk that spinach is not all that good a source of iron and, in fact, it got the claim by error.

Can You Match the National Park to the U.S. State?

play.howstuffworks.com/quiz/can-you-match-the-national-park-to-the-us-state

There's so much more to America than fascinating buildings and elaborate cityscapes. This U.S. national parks quiz showcases nature's outstanding design achievements. Prepare to be wowed by stunning facts and photos!

10 Impossible-to-kill Plants

home.howstuffworks.com/gardening/garden-design/10-impossible-to-kill-plants.htm

Anyone who complains about having a brown thumb may simply be choosing the wrong plants to grow. Some plants are exceedingly sensitive and temperamental. But there are some plants that even the worst gardener would have a hard time getting rid of.

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