Colin Saldanha, a biology professor at American University in Washington, D.C., has always been intrigued by the hormone estrogen. Specifically, how the hormone that does so much (for example, it promotes sexual behavior ...
Plants & Animals
Jan 3, 2012
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(PhysOrg.com) -- Could it be love? Rats infected with the parasite Toxoplasma seem to lose their fear of cats – or at least cat urine. Now Stanford researchers have discovered that the brains of those infected, fearless ...
Plants & Animals
Aug 17, 2011
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(PhysOrg.com) -- In a new study titled Male-Female Coevolution in the Wild: Evidence from a Time Series in Artemia Franciscana and published in Evolution, evolutionary ecologist Nicolas Rode from the Centre for Functional ...
(PhysOrg.com) -- While most people are familiar with the fact that many species of female spiders eat their male counterparts, new research findings published in the Biological Journal of the Linnean Society show how biologists ...
Polygamy practiced by some 19th century Mormon men had the curious effect of suppressing the overall offspring numbers of Mormon women in plural marriages, say scientists from Indiana University Bloomington and three other ...
Evolution
Feb 22, 2011
33
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Researchers at the California Institute of Technology (Caltech) and the University of California, San Diego (UCSD) have discovered that injecting a simple hormone into leeches creates a novel way to study how hormones and ...
Cell & Microbiology
Mar 16, 2010
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(PhysOrg.com) -- Some mouse sperm can discriminate between its brethren and competing sperm from other males, clustering with its closest relatives to swim faster in the race to the egg. But this sort of cooperation appears ...
Plants & Animals
Jan 20, 2010
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Territorial behavior in male mice might be linked to more "girl-power" than ever suspected, according to new findings at UCSF. For the first time, researchers have identified networks of nerve cells in the brain that are ...
Plants & Animals
Oct 1, 2009
1
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Scientists studying Eastern North American monarch butterflies (Danaus plexippus) have uncovered a suite of genes that may be involved in driving the butterflies to migrate towards Mexico for the winter. Their research, published ...
Evolution
Mar 31, 2009
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0
An analysis of data from 42 police forces across England and Wales has found that over half of the 106,984 child sexual abuse cases in 2022 involved reported offenses by young people aged between ten and 17. This is a rise ...
Social Sciences
Jan 18, 2024
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