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7 centuries-old suits of battle armor from around the worldCountdown From Roman "fish scale" armor to Japanese samurai suits, these examples of battle armor were designed to protect and impress.
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The 9 most massive numbers in existenceFrom the humble trillion to Graham's number, here are some of the most massive numbers ever conceived by humans.
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32 physics experiments that changed the worldFrom the discovery of gravity to the first mission to defend Earth from an asteroid, here are the most important physics experiments that changed the world.
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32 things on Mars that look like they shouldn't be thereThe more scientists study the Red Planet, the more they find unusual objects and patterns scattered across Mars' surface. Here are some of the most baffling.
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32 alien planets that really existBeyond our solar system, countless alien worlds of lava, ice, water and noxious gas swirl through the cosmos. Here are some of the strangest exoplanets that scientists have discovered so far.
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32 weird ways to fight climate change that just might workFrom "MooLoos" to painting mountains, these silly scientific suggestions could actually help with climate change.
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32 of the world's smartest animalsThough measuring animal intelligence is tricky, some animals show remarkable cognitive abilities that may rival our own.
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21 of the best conspiracy theoriesConspiracy theories that have taken hold range from a faked moon landing to Barack Obama's birthplace to chemtrails.
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How to tell you're in love with someone, according to scienceReference Your brain and behaviors tell you you're in love in a variety of ways. Here's 14 signs you've been struck by Cupid.
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