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Three Famous Hypotheses and How They Were Tested

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From Isaac Newton to Ivan Pavlov, scientists have developed and tested hypotheses through carefully crafted experiments for centuries. Here are three groundbreaking hypotheses and the predictions they tested.

We'll Give You 3 Items, You Tell Us What They Have in Common

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The human brain is unbelievably good at looking for patterns, as a way to relate things to one another in a way that makes sense. Take our quiz to see if you can figure out what all these trios have in common!

Can You Match the Sidekick to the Princess?

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Everyone knows that if you want to be a princess, you need a sidekick - or two, or seven. But can you match these besties to their princesses?

Perennial Flowers

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Perennial flowers return to bloom each year. Learn the different types of perennials, and which ones are right for you.

1955 Ford Thunderbird Convertible

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A 1955 Ford Thunderbird convertible is a classic American collectible, with style, power, and charisma. Learn more about the 1955 T-bird convertible.

What are the ingredients in iridescent makeup?

lifestyle.howstuffworks.com/style/body-scents-fragrances/ingredients-in-iridescent-makeup.htm

Are you wondering what are the ingredients in iridescent makeup? Find out what the ingredients in iridescent makeup are in this article.

How to Connect a DVD Player to a TV

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Do you know how to connect a DVD player to a TV? Find out how to connect a DVD player to a TV in this article from HowStuffWorks.

This Rare Giraffe Is Losing More of Its Color Every Year

animals.howstuffworks.com/mammals/rare-giraffe-fading-color-vitiligo-skin.htm

The first case of vitiligo observed in a giraffe. Learn more about this color-fading vitiligo giraffe in this HowStuffWorks Now article.

The World Has Finally Made Its Very Last New VCR

electronics.howstuffworks.com/new-vcr-vhs-final-production-run.htm

The last VCR is rolling off production lines this month. Learn more about VCRs, VHS and obsolete tech in this HowStuffWorks Now article.

Why Walking Through Doorways Makes Us Forget

science.howstuffworks.com/life/inside-the-mind/human-brain/why-walking-through-doorways-make-us-forget.htm

Why are we here again? HowStuffWorks looks at research on the act of forgetting once you walk through doorways.

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