In a study analyzing the genomes of 210,000 people in the United States and Britain, researchers at Columbia University find that the genetic variants linked to Alzheimer’s disease and heavy smoking are less frequent in people with longer lifespans, suggesting that natural selection is weeding out these unfavorable variants in both populations. Researchers further find […]
BUFFALO, N.Y. — In saliva, scientists have found hints that a “ghost” species of archaic humans may have contributed genetic material to ancestors of people living in Sub-Saharan Africa today. The research adds to a growing body of evidence suggesting that sexual rendezvous between different archaic human species may not have been unusual. Past studies […]
The blue whale, which uses baleen to filter its prey from ocean water and can reach lengths of over 100 feet, is the largest vertebrate animal that has ever lived. On the list of the planet’s most massive living creatures, the blue whale shares the top ranks with most other species of baleen whales alive […]
[wds id=”4″] Images-Jonathan Malindine The Tlingit and Haida, indigenous peoples of the Northwest Coast (NWC), have used carved wooden hooks to catch halibut for centuries. As modern fishing technology crept into use, however, the old hooks practically disappeared from the sea. But they thrived on land — as decorative art. The hook’s evolution from utilitarian […]