http://phys.org/ en-us Phys.org internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. In 1999, Danish homosexuals were granted access to stepchild adoption, and after the 2001 general election, legislation to improve homosexuals' rights was introduced in the Danish Parliament. In the subsequent negotiations many politicians spoke of homosexuals as central to the understanding of Danish values. This was in stark contrast to similar negotiations in 1989 when Parliament passed the Same-Sex Marriage Act: http://phys.org/news285244764.html Other Sciences Mon, 15 Apr 2013 11:39:30 EST news285244764 Breaking up is hard to do—and can be detrimental to one's reproductive fitness, according to a new University of Pennsylvania study. http://phys.org/news278184641.html Biology Wed, 23 Jan 2013 17:30:53 EST news278184641 (Phys.org)—Coyotes living in cities don't ever stray from their mates, and stay with each other till death do them part, according to a new study. http://phys.org/news267805151.html Biology Tue, 25 Sep 2012 15:19:30 EST news267805151 In the foothills of the Santa Cruz Mountains two closely related species of mice share a habitat and a genetic lineage, but have very different social lives. The California mouse (Peromyscus californicus) is characterized by a lifetime of monogamy; the deer mouse (Peromyscus maniculatus) is sexually promiscuous. http://phys.org/news265558905.html Biology Thu, 30 Aug 2012 15:22:04 EST news265558905 Humans, fish and frogs share neural circuits responsible for a diversity of social behavior, from flashy mating displays to aggression and monogamy, that have existed for more than 450 million years, biologists at The University of Texas at Austin found. http://phys.org/news257689885.html Biology Thu, 31 May 2012 14:00:05 EST news257689885 It's quite common for a female song sparrow to stray from her breeding partner and mate with the male next door, but a new study shows that sleeping around can be costly. http://phys.org/news256920973.html Biology Tue, 22 May 2012 15:56:43 EST news256920973 New evidence proves humans are continuing to evolve and that significant natural and sexual selection is still taking place in our species in the modern world. http://phys.org/news255019075.html Biology Mon, 30 Apr 2012 15:40:07 EST news255019075 (PhysOrg.com) -- New research published today in Nature Communications online journal suggests that monogamy and close genetic relationships work together to enhance the cooperative social structure of insects such as bees, wasps and ants. http://phys.org/news230399373.html Biology Wed, 20 Jul 2011 17:20:01 EST news230399373 Society has long debated the contrasting advantages of monogamy and promiscuity and, in western society at least, the long term benefits of monogamy have in general won out. However new research published in BioMed Central's open access journal BMC Evolutionary Biology shows that sperm from polygamous mice are better competitors in the race for fertilisation. http://phys.org/news214720086.html Biology Thu, 20 Jan 2011 04:28:27 EST news214720086 While monogamy is often touted as a way to protect against disease, young couples who say they have discussed monogamy can't seem to agree on what they decided. And a significant percentage of those couples who at least agreed that they would be monogamous weren't. http://phys.org/news214586634.html Medicine & Health Tue, 18 Jan 2011 15:50:04 EST news214586634 (PhysOrg.com) -- Did women and men contribute equally to the lineage of contemporary populations? Did our ancestors, Homo sapiens, lean more toward polygamy or monogamy? To answer these questions, Dr. Damian Labuda, an investigator at the Sainte-Justine University Hospital Research Center and a professor at the Department of Pediatrics of the Université de Montréal, headed a team that analyzed genomic data from three population samples of African, Asian and European origin. The study's findings are published in the most recent issue of the American Journal of Human Genetics. http://phys.org/news186750900.html Biology Tue, 02 Mar 2010 11:15:23 EST news186750900 What do flocks of birds have in common with trust, monogamy, and even breast milk? According to a new report in the journal Science, they are regulated by virtually identical neurochemicals in the brain, known as oxytocin in mammals and mesotocin in birds. http://phys.org/news169391813.html Biology Thu, 13 Aug 2009 14:17:25 EST news169391813