1 - 12 of 212 results
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.

Mystery of the Missing Tusks

This activity explores images of elephants with and without tusks, which serve as phenomena for learning about selection and human impacts on the frequency of traits within populations.

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.