StrangeEarth

CARL SAGAN explains how the ancient Greeks knew the Earth was round and calculated its circumference over 2,000 years ago. Credit: COSMOS (1980)

CARL SAGAN explains how the ancient Greeks knew the Earth was round and calculated its circumference over 2,000 years ago. Credit: COSMOS (1980)

Video Credits to: u/MartianXAshATwelve
< Previous This unusual cloud over Australia is formed when rain evaporates below a parent storm, moisture is in the air leading to a secondary cloud formation. Called a scud cloud and is darkened by its position relative to the sun. Credit: Jon Wood Tik/Tok via Sci How the Egyptians built the Great Pyramids: a different theory. They didn’t haul the blocks to the pyramids but rather formed the blocks by pouring an ancient concrete into wooden molds. Next >
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