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Was Heidi the Octopus Really Dreaming?

Heidi the octopus is sleeping. Her body is still, eight arms tucked neatly away. But her skin is restless. She turns from ghostly white to yellow, flashes deep red, then goes mottled green and bumpy like plant life. Her muscles clench and relax, sending a tendril of arm loose. If …

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When Biking and Bears Don’t Mix

In a 2013 study on forest land near Vail, Colo., researchers blamed human tourists and recreation for the smaller herd counts, down to several dozen head of elk from 1,000 in years past. One study showed that if a cow elk was disturbed 10 times during calving, no calves would …

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