in-mountains: Chalk under a microscope. “Chalk is composed of extremely small white globules. They look, up close, like snowballs made from brittle paper plates. Those plates, it turns out, are part of ancient skeletons that once belonged to roundish little critters that lived and floated in the sea, captured a little sunshine and carbon, then died and sank to the bottom… Scientists call these ancient plates ‘coccoliths.’”
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in-mountains:

Chalk under a microscope.

“Chalk is composed of extremely small white globules. They look, up close, like snowballs made from brittle paper plates. Those plates, it turns out, are part of ancient skeletons that once belonged to roundish little critters that lived and floated in the sea, captured a little sunshine and carbon, then died and sank to the bottom… Scientists call these ancient plates ‘coccoliths.’”

(via catherinewillis)

Source: NPR

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    This is cool, but ALSO super duper creepy.
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  16. strangelogik reblogged this from madamebarry and added:
    “Chalk is composed of extremely small white globules. They look, up close, like snowballs made from brittle paper...
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  19. athinkinglife reblogged this from geofaultline and added:
    Imagine this the next time you pick up a piece.
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  24. marlianguisette reblogged this from artsandsmarts and added:
    So crazy how beautiful it is.
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  31. sarahlizfits reblogged this from saccharinenostalgia and added:
    So cool…
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  34. citydust reblogged this from minced-oath and added:
    Come on, today’s chalk isn’t...coccolithophorida anymore. They just use gypsum or...