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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.

The Worst Animal in the World

Every year, as many as 400 million people are infected with life-threatening diseases by the Aedes aegypti mosquito. It wasn’t always so dangerous.

Waste-watching: Sewage can help track pandemic virus trends

Across the U.S. and in Europe, researchers and health officials say they can track the course of a community outbreak of the new coronavirus by studying the waste flushed from its bathrooms. And that can provide a valuable addition to public health tools, they say.