GREEN, MEAN, AND UNSEEN

Dolphins smile because they know something you don’t. And they’re not telling.

✗ FAKE
Dolphins appear to smile because of the fixed shape of their mouths, not because they are happy. Their facial structure does not change with emotion.

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Peacocks' feathers are actually brown; their colors are due to microscopic structures. Optical illusion mastered.Pistol shrimp can snap its claw so fast it creates a bubble that stuns prey. Weaponized physics.Sahara Desert was once a lush, green landscape. Climate plot twist.A bolt of lightning is five times hotter than the surface of the sun. Nature occasionally reminds us who’s in charge.The Earth travels through space at around 30 km per second. Standing still is an illusion.Owls can turn their heads because they’re always looking for drama.See all Green, Mean, and Unseen facts →

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Dolphins smile because they know something you don’t. And they’re not telling. | SmartAss Facts