The population on Rapa Nui didn't crash because the Europeans came. Nor did they live in idyllic equilibrium with nature for centuries.
Archaeology
Sep 3, 2020
4
547
Performing experiments in a river in Trinidad, a team of evolutionary biologists has found that male guppies continue to reproduce for at least ten months after they die, living on as stored sperm in females, who have much ...
Plants & Animals
Jun 12, 2013
0
0
California sea lions have managed to maintain—and, in the case of males, increase—their average body size as their population grows and competition for food becomes fiercer. This is in contrast to other marine mammals, ...
Plants & Animals
Apr 27, 2023
0
76
In 1800 the world's population was around 1 billion people. Since then it has increased more than sevenfold to reach over 7.5 billion in 2017 (see figure 1), and is forecast to top 10 billion by 2050. Will population growth ...
Environment
Oct 31, 2017
2
151
Australia's dingo fence is an internationally renowned mega-structure. Stretching more than 5,600 kilometers, it was completed in the 1950s to keep sheep safe from dingoes. But it also inadvertently protects some native species.
Evolution
Jun 1, 2023
0
445
In a new study, Monarch Watch Director Chip Taylor and colleagues have shown that speculation regarding the declining monarch population, despite having received much attention, is unsupported.
Plants & Animals
Aug 18, 2020
1
2098
In 1988, a biologist at Michigan State University, Richard Lenski, set up 12 flasks of E. coli and his group has maintained and followed their evolution ever since. Periodically, subsamples are frozen, enabling scientists ...
Evolution
May 23, 2022
0
797
For more than half a century, many social scientists and urban geographers interested in modeling the movement of people and goods between cities, states or countries have relied on a statistical formula called the gravity ...
Mathematics
Feb 27, 2012
0
0
A team of researchers with the International Institute for Applied Systems Analysis has found a connection between fertility rates in many African countries and access to education for girls living in those countries. In ...
Cooperative behaviour is widely observed in nature, but there remains the possibility that so-called 'cheaters' can exploit the system, taking without giving, with uncertain consequences for the social unit as a whole. A ...
Evolution
Apr 30, 2013
70
0
