| How many triangles puzzle: Can you crack it? | |  | metro.co.uk - If you think you’re a whizz at cryptic puzzles, take a butcher’s at the one above. Doing the rounds of the internet again, this puzzle from Quora involves you calculating how many triangles are prese… |
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| Your Dog Knows How You Feel—Here’s How | |  | news.nationalgeographic.com - Photograph by Joel Sartore, National Geographic Photo Ark Does it ever seem like your dog is in tune with your emotions? You may be on to something. In new experiments, dogs showed signs of understan… |
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