Dolly, the oldest rhino in the US, has died at a Tennessee zoo at age 56
Dolly was 56 years old. In a social media post Thursday, Zoo Knoxville said Dolly was euthanized after her mobility declined ...
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Why Do Some Trees Not Lose Their Leaves During Winter?
When you've always known deciduous trees to drop their leaves in winter, seeing one that hasn't can be unsettling. Here's why ...