azhang

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mistymorningme: “ There are times when life calls out for a change by Evelyn Arthur Richman ”<p>See more<p>Lavender Stairs - what a beautiful pathway of …

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Tulip staircase

Asteroid crash in Quebec may have caused prehistoric climate change

The cause of a thousand-year cold period that killed off giant ground sloths, mastodons, and sabretooth cats continues to be in contention. While it's long been hypothesized that the major climate shift that occurred around 12,900 years ago was the result of a sudden flood of freshwater into the …

Nasa Curiosity rover tests suggest life may have existed on Mars

An ancient network of rivers on Mars once made parts of the planet habitable for microbial life, according to the latest analysis from Nasa's Curiosity rover.<p>Rock dust drilled from sediments in the giant Gale crater on the red planet were found to contain clay minerals that can have formed only in …