It's generally recognized that differences in background and education cement class differences. It is less clear when and under what circumstances individual psychological forces can drive an initially homogenous social ...
Social Sciences
Jun 17, 2020
0
58
(Phys.org) -- Not all acts of altruism are alike, says a new study. From bees and wasps that die defending their nests, to elephants that cooperate to care for young, a new mathematical model pinpoints the environmental conditions ...
Evolution
Apr 30, 2012
1
1
Ecosystems in the Southern Ocean around Antarctica face growing threats from climate change and fishing pressure, but identifying areas in need of protection is challenging.
Plants & Animals
Mar 19, 2020
0
83
Although scientists have known since the middle of the 19th century that the tropics are teeming with species while the poles harbor relatively few, the origin of the most dramatic and pervasive biodiversity on Earth has ...
Earth Sciences
Jun 10, 2013
0
0
The C4 cycle supercharges photosynthesis and evolved independently more than 62 times. Using constraint-based modeling, researchers successfully investigated which factors contributed to the evolution of the C4 trait. The ...
Plants & Animals
Dec 3, 2019
0
3
Many of us are aware of the claim that humans can maintain no more than 150 friendships. That figure is called "Dunbar's number" after the evolutionary psychologist Robin Dunbar, who first introduced the idea three decades ...
Evolution
Jun 23, 2021
0
6
Researchers have analyzed a new mathematical model to investigate how a population's spatial structure affects the evolution of cooperation. Jorge Peña of the Max Planck Institute for Evolutionary Biology in Plön, Germany, ...
Social Sciences
Aug 11, 2016
0
30
In a rare opportunity to directly compare plant communities in the same area now with a survey taken 50 years ago, a University of Arizona-led research team has provided the first on-the-ground evidence that Southwestern ...
Ecology
Aug 14, 2013
5
0
Animal acoustic signals are amazingly diverse. Researchers from the University of Zurich and the University of Saint-Etienne, together with French, American and Dutch collaborators, explored the function and diversification ...
Plants & Animals
Oct 2, 2020
0
99
Human societies are so prosperous mostly because of how altruistic we are. Unlike other animals, people cooperate even with complete strangers. We share knowledge on Wikipedia, we show up to vote, and we work together to ...
Evolution
Apr 10, 2019
0
9
