Other populations have become cloistered thanks ... a now-extinct group of human ancestors who originated in Asia. But after that initial meet-up, Papua New Guineans became genetically isolated ...
Design Cells/iStock/Getty Images Plus "Within the past 50,000 years most of the variation that is seen among humanpopulations evolved," Hodgson said. "This includes all of the skin color ...
Coastal ecosystems, including fragile mangroves, wetlands and coral reefs, are also sensitive to the expanding coastal populations and to the infrastructure and pollution accompanying human ...
Coastal populations are expanding quickly around the world. The rise is evident in burgeoning waterfront cities and in the increasing damage from powerful storms and rising sea levels. Yet ...