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A herd of elephants at the San Diego Zoo instinctively formed a protective circle around their calves during a 5.2 magnitude earthquake. In a remarkable display of instinct, a herd of elephants at ...

African elephants at the San Diego Zoo instinctively formed a protective circle around its youngest family members in the seconds after a 5.2 magnitude earthquake struck Southern California on Monday.

Of particular interest to astronomers is the nebula's faint, Venn-diagram-like structure — two rings of ejected material shaped by the gravitational influence of the central stars. Scientists ...