Deep-sea hydrothermal vents are hot springs on the ocean floor. Sea water penetrates into the ocean crust, becomes heated, and rises to the seafloor surface carrying dissolved nutrients. Around these vents, far from any sunlight, ...
Evolution
Nov 30, 2023
0
30
The human genome is littered with "selfish genetic elements," which do not seem to benefit their hosts, but instead seek only to propagate themselves.
Evolution
Jul 6, 2022
0
94
The Atacama desert, which stretches for approximately 1,600 km along the western coast of the cone of South America, is the driest place on Earth. Some weather stations there have never recorded rainfall throughout their ...
Evolution
Oct 21, 2022
0
360
New research suggests that American mastodons were avid travelers, migrating vast distances across North America in response to dramatic climate change during the ice ages of the Pleistocene. The study, conducted by an international ...
Archaeology
Sep 1, 2020
2
622
Large carnivores are generally sensitive to ecosystem changes because their specialized diet and position at the top of the trophic pyramid is associated with small population sizes. This in turn leads to lower genetic diversity ...
Ecology
Feb 25, 2021
1
274
The emergence in the Neolithic of patrilineal social systems, in which children are affiliated with their father's lineage, may explain a spectacular decline in the genetic diversity of the Y chromosome observed worldwide ...
Archaeology
Apr 24, 2024
0
44
Cornell University researchers have found that white-tailed deer—the most abundant large mammal in North America—are harboring SARS-CoV-2 variants that were once widely circulated, but no longer found in humans.
Ecology
Jan 31, 2023
0
105
A new analysis of lice genetic diversity suggests that lice came to the Americas twice—once during the first wave of human migration across the Bering Strait, and again during European colonization. Marina Ascunce, currently ...
Evolution
Nov 8, 2023
0
66
Genetic kinship analyses of human bones reach their limits if the DNA is poorly preserved or if destructive sampling is not possible. New research shows that in such cases, comparisons of the structure and shape of certain ...
Evolution
Aug 10, 2023
1
91
The reintroduction of 32 bobcats to an island off the coast of Georgia more than three decades ago created an ideal experiment to examine the accuracy of a genetic-modeling technique that predicts extinction of isolated wildlife ...
Ecology
Feb 19, 2021
1
84
