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POPSFreakiest (Lab) Animals The last one is Humanzee: It reads "Ok, so this one doesn't actually exist." But could have... The one I find most intriguing is The spider/goats: A private biotechnology company in Canada has managed to breed goats whose milk contains spider silk, the same things the eight-legged insects use to make webs and considered one of the strongest fibers occurring in nature. The silk is compatible with the human body and can be used to repair tissues and create replacement ligaments. No word on whether the goats are able to climb buildings or rescue damsels-in-distress. About the smart mice: Scientists managed to implant a few of the little rodents with human brain cells amounting to about one percent of their total grey matter. The same group has plans to produce mice with one hundred percent human brain cells, which they have permission to do unless the mice start exhibiting human traits. What, like banding together to escape?
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POPSHow genes pick our mates for us Instead of smelly T-shirts, Chaix and colleague Peter Donnelly of the University of Oxford studied previously gathered genetic data on 30 Caucasian couples from Utah and 30 Yoruba couples from Nigeria. The researchers analysed about 9000 genetic differences within the MHC genes, as well as more than 3 million differences dotted across the rest of their genomes. This suggests that the American couples are selecting mates, in large part, based on MHC genes. Not so for Yoruba couples, who seemed to pick mates with MHC genes no more different than would be expected for any two people picked at random from the population. One explanation for the different findings could be diversity. Overall, Yoruba people had more differences in their MHC genes than Americans, so there could be less evolutionary pressure to find a mate with new genes.
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POPSIs Palin interested in mating habits of crabs? At what point will the facts matter? Honestly, i think i'm going to give a speech about how i'm totally against clipping and how much i prefer bookmarking. And if people bring up the fact that i helped create Clipmarks, i'll remind them that i played shortstop in high school and everyone will cheer me on.
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POPSIs it so different? "After the female deposits her unfertilized eggs into the male, the outer shell of the eggs breaks down, and tissue from the male grows up around the eggs in the pouch. After fertilizing the eggs, the male closely controls the prenatal environment of the embryos in his pouch. The male keeps blood flowing around the embryos, controls the salt concentrations in the pouch, and provides oxygen and nutrition to the developing offspring through a placenta-like structure until he gives birth." " in some species of pipefish, the sex roles are reversed because males become pregnant and there is limited brood pouch space. So females compete for access to available males, and thus secondary sex traits (such as brightly colored ornamentation) evolve in female pipefish instead of males."
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POPSThe Male Brain, Explained "We have been assuming that the ways in which emotions are organized in the brain are essentially similar in men and women," but they aren't. Parts of the limbic cortex, which is involved in emotional responses, are smaller in men than in women. Additionally, scientists at McMaster University have found that guys have a smaller density of neurons in areas of the temporal lobe that deal with language processing. Appreciate his naturally upbeat nature Does he seem to be "up" most of the time? It's not your imagination: Male brains produce 52 percent more serotonin (the chemical that influences mood) than female brains, according to a study done at McGill University. And studies show that fewer men than women suffer from depression. Remember his brain is his largest sex organ The preoptic area of the hypothalamus is greater in volume, in cross-sectional area and in the number of cells. This area of the hypothalamus is in charge of mating behavior.
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POPSls sexual deception a male trait? "Future studies will need to evaluate the potential for male mate choice copying and deception in natural populations, because male mate choice copying cannot be evolutionarily stable if males always have an opportunity to deceive rivals," they said. After all, if males always attempt such deception, any competitor who didn't fall for the ruse would have easy access to the choicest mating partner."
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POPSPelosi Wants to Save the Planet? Democrats want no oil from the American OCS or ANWR. But of course they do want more oil. From OPEC. From where Americans don't vote. From places Democratic legislators can't see. On May 13 Sen. Chuck Schumer -- deeply committed to saving just those pieces of the planet that might have huge reserves of American oil -- demanded that the Saudis increase production by a million barrels a day. It doesn't occur to him that by eschewing the slightest disturbance of the mating habits of the Arctic caribou, he is calling for the further exploitation of the pristine deserts of Arabia. In the name of the planet, mind you. The desire to swing a cluebat at these twits is strong....
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POPSsnakes pics Showing now search results for snakes pics for all NEW pictures see Newest Today
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POPSUrban environment not so good for birds 'There are many different strategies that birds deploy to counter the noise of the urban environment. These strategies could lead to us seeing a completely separate urban species of bird which can't breed with its country cousin.'
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POPSThe evolution of morality "So to answer the question why we are moral, it is because our ancestors, who were apes and shared the common ape heritage of being social animals of a certain kind, were rule followers, and had to cooperate to survive and gain mating opportunities. And then we evolved language. "
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