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Laetoli Footprints

This activity explores an image of fossil footprints at Laetoli, which serves as a phenomenon for learning about fossil evidence and human evolution.

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.

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.