open-system pingo

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References

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Close-up of ostriches (Struthio camelus) necks and heads; location unknown.

6 of the World's Most Dangerous Birds

World Data Locator Map: Australia

Is Australia an Island?

Nativity Scene, Adoration of the Magi, Church of the Birth of the Virgin Mary, Montenegro

Why Is Christmas in December?

Fish. Lionfish. Lion-fish. Turkey fish. Fire-fish. Red lionfish. Pterois volitans. Venomous fin spines. Coral reefs. Underwater. Ocean. Red lionfish swims by seaweed.

10 of the World’s Most Dangerous Fish

A mug shot taken by the regional Colombia control agency in Medellin

Pablo Escobar: 8 Interesting Facts About the King of Cocaine

Srinivasa Ramanujan, Indian mathematician and autodidact.

6 Interesting Facts about Srinivasa Ramanujan

Christmas tree, holiday, pine

How Did the Tradition of Christmas Trees Start?

open-system pingo: Media

geology

Images

pingo

pingo

Diagram explaining the formation of open-system and closed-system pingos.

Encyclopædia Britannica, Inc.