A giant hole in Siberia is visible from space and growing rapidly. It might reveal hints about our planet's future.
A giant hole in the earth is breaking open the land in Siberia, and photos from space show it's growing rapidly ... which by ...
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Earth from space: Giant, pyramid-like 'star dunes' slowly wander across Moroccan desert
This intriguing astronaut photo shows around a dozen giant "star dunes" as ... in a single direction. Related: See all the ...