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The red square on this 1767 map of St. Croix marks where Danes believed the Maroon settlement was. Paul Kuffner/Royal Danish Library

Escaped slaves on St. Croix hid their settlements so well, they still haven’t been found – archaeologists using new mapping technology are on the hunt

As many as 10% of enslaved people on St. Croix escaped. Where they went has remained a mystery, but scientists are using new mapping technology to find answers.
Philadelphia’s neighborhoods are green and not so green. Marli Miller/UCG/Universal Images Group via Getty Images

More vulnerable people live in Philadelphia neighborhoods that are less green and get hotter

An interdisciplinary group of researchers at Penn State ran computer models on two Philadelphia census tracts. The neighborhood with more vulnerable residents was also hotter.

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