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Why no tusks? Poaching tips scales of elephant evolution

A hefty set of tusks is usually an advantage for elephants, allowing them to dig for water, strip bark for food and joust with other elephants. But during episodes of intense ivory poaching, those big incisors become a liability.

This Tiny Fish Can Withstand Almost Anything

In Virginia’s Elizabeth River, the unremarkable-looking mummichog has survived decades of industrial pollution—but the price it has paid has worrying implications for human health.