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amnhnyc:  The sky is blue, grass is green and blood is red. Right? Wrong!  Blood can be blue, violet, green or clear. The Horseshoe crab has blue blood.The color is striking, but the horseshoe crab isn’t the only blue-blooded invertebrate: others include

published on: 2015-10-25 16:40:16

museum-of-artifacts:    Spherical Astrolabe, Museum of the History

museum-of-artifacts: Spherical Astrolabe, Museum of the History

museum-of-artifacts:   The skeleton called the “Ring Lady”

museum-of-artifacts: The skeleton called the “Ring Lady”

allthingseurope:  Beynac-et- Cazenac, France (by Joan)

allthingseurope: Beynac-et- Cazenac, France (by Joan)

chaosophia218:   Sidney Hall - Signs of the Zodiac, “Urania’s

chaosophia218: Sidney Hall - Signs of the Zodiac, “Urania’s

blktauna:  coolkenack:  Gullinbursti on Facebook.com   grabby

blktauna: coolkenack: Gullinbursti on Facebook.com grabby

lindahall:  Plates from Harmonia Macrocosmica, by Andreas Cellarius,

lindahall: Plates from Harmonia Macrocosmica, by Andreas Cellarius,