Is the Milky Way an 'outlier' galaxy? Studying its 'siblings' for clues
The most-studied galaxy in the universe—the Milky Way—might not be as "typical" as previously thought, according to a new study.
Sep 20, 2017
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Young birds less honest when competing against siblings
Chicks that are competing with siblings or whose parents are likely to die or switch partners tend to be less honest when begging for food, research into sibling rivalry in birds by Oxford University scientists has found.
Sibling competition helped guide dispersal in pre-industrial populations
Researchers who examined family genealogies from Finland found that the presence of same-sex elder siblings increased the probability that people would disperse to new lands, whereas having opposite-sex siblings had less ...
Centuries-old database reveals clues on human reproductive habits, trends
When predicting future global population growth, sometimes scientists look to the past. Using a database with historical records that began in 871 A.D., an anthropologist at the University of Missouri was able to show reproductive ...
Alternative explanations for the evolution of monogamy and sibling cooperation
The textbook "monogamy hypothesis" argues that monogamy favors the evolution of cooperation by increasing sibling relatedness, since helpers are as related to the full siblings that they care for as they are to their own ...
One professor's fight to help the children of incarcerated parents
When I was ten years old my father, a lawyer, was incarcerated. He was what some people call a "white collar criminal" and spent two years in prison. Because I come from a loving family and because my family had other supports ...
Civil war among the mongooses—and why it's all about sexual success
The banded mongoose, a small social mammal of the African savannah, is known to be one of the most cooperative and helpful of all animals.
When young bluebirds don't leave the nest
For a young male western bluebird, it might be better to live with one's parents as a helper for a year before starting a nest of one's own, according to a new study in Behavioral Ecology.
First-borns may have higher IQ but sibling bonds are what really shape our future
First-borns are responsible, middle children are people pleasers and the youngest are attention seekers, we often hear. But scientists have failed to find any real evidence for a link between birth order and personality.
Study finds causal connection between genotypes and years of education achieved
A first-of-its-kind, nationally representative study of siblings supports previously published research on unrelated individuals that links specific genotypes to educational attainment among adults in their mid-20s to early ...
