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POPSHomosexual behavior due to genetics and environmental factors “Overall, genetics accounted for around 35 per cent of the differences between men in homosexual behavior and other individual-specific environmental factors (that is, not societal attitudes, family or parenting which are shared by twins) accounted for around 64 per cent. In other words, men become gay or straight because of different developmental pathways, not just one pathway.” For women, genetics explained roughly 18 per cent of the variation in same-sex behavior, non-shared environment roughly 64 per cent and shared factors, or the family environment, explained 16 per cent. The study shows that genetic influences are important but modest, and that non-shared environmental factors, which may include factors operating during fetal development, dominate.
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POPSchildren lost the right to roam in 4 generations The article reflects our changing habits and our relationship with our environment. I agree completely about the necessity of outdoors, nature, plants, our good ol' earth. Ever been fishing? To a quiet golf course? A hike? How does it rejuvenate you? I am working on making my backyard a kind of restful, naturalist place for me to go and be refreshed.
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POPSClipmarks now available for Firefox 3 Just wanted to make sure everyone knows that we released a new version of clipmarks (version 3.5) that supports the just-released Firefox3. We made some real nice improvements to the orange lines so they should more accurately outline elements on the page to clip. If you don't have the latest version of clipmarks installed, you can get it here https://addons.mozilla.org/en-US/firefox/addon/1407. There's a review section on that page, so if you have anything nice to say, don't hesitate :) FYI...we're getting loads of new clippers today, so if you get a chance, check out the newest clips section and welcome some new users with some pops and comments.
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POPS Where does the mind stop and the rest of the world begin? “Where does the mind stop and the rest of the world begin?” Most people might answer, “At the skull.” But Clark and Chalmers set out to convince their readers that the mind is not simply the product of the neurons in our brains, locked away behind a wall of bone. Rather, they argued that the mind is something more: a system made up of the brain plus parts of its environment.
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POPSThinking ahead: Bacteria anticipate coming changes in their environment To test this idea, the researchers exposed a population of E. coli to different temperatures and oxygen changes, and measured the gene responses in each case. The results were striking: An increase in temperature had nearly the same effect on the bacterium's genes as a decrease in oxygen level. Indeed, upon transition to a higher temperature, many of the genes essential for aerobic respiration were practically turned off. To prove that this is not just genetic coincidence, the researchers then grew the bacteria in a biologically flipped environment where oxygen levels rose following an increase in temperature. Remarkably, within a few hundred generations the bugs partially adapted to this new regime, and no longer turned off the genes for aerobic respiration when the temperature rose.
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POPSThe Mind-BlackBerry Problem - Why we think we can function in two worlds at once?? "If we don't want this two-worlds experiment to be regulated nature's way—by killing people—then we'd better regulate it ourselves. Here are a few proposed rules of the road. Multitasking is a glorious gift. We can't ban it, nor should we. Want to phone your spouse or your office while walking? Fine. The only life at stake is yours. Want to turn on your car radio or music player? Fine. Listening is easier than talking, and you can mentally or physically shut it off when necessary. Want to chat with your passenger? Fine again. Studies indicate that passenger conversations are less distracting than phone calls, apparently because you're sharing and often referring to the same environment.
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POPSHumanity May Hold Key For Next Earth Evolution If we recognize humanity is an integral part of the planet and begin working for a healthy Earth, then planetary evolution could move forward to some unknown future. On the other hand, Langmuir said, if we continue to view the Earth as something that is separate, that we merely use, then the resulting practices could damage the environment enough to stall planetary evolution, even causing it to fall back to a level where it supports just microscopic life. “The story of the Earth is our story. We are intimately connected in every fiber of our being, in every breath we take. We’re inseparable from the Earth,” Langmuir said.
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POPSReverse evolution in real-time These findings provide further insights into the basic understanding of how evolution and diversity are generated and maintained. On the one hand, it provides evidence for evolution happening through changes in the distribution of alleles in a population (so-called standing genetic variation), from generation to generation, rather than the appearance of mutations, from one generation to the next. On the other hand, as Henrique notes, 'It has implications for the definition of biodiversity: some of the 'reversed' flies may be phenotypically identical to the ancestral flies, but they are genetically different. How then do we define biodiversity?' interesting experiments.
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POPSThe truth about recycling Far too much valuable info here to fit in a clip, so go to the source for interesting discussions of the history of recycling, current status, innovations and concerns about what happens to recyclables being shipped to China and other developing nations. China is now the largest importer of recyclable materials in the world! The explanation of how single stream collection of recyclables works is fascinating. I was not aware of all the new technology being employed to sort and separate recyclable materials. The section on the future of recycling discusses the need for product design to take into account recycling of the product materials to create "closed-loop" cycles where there is no waste. Sustainable packaging emphasizes the use of renewable, recycled and non-toxic source materials to benefit the environment and cut costs. Wal-Mart is jumping on this bandwagon. "Waste is really a design flaw."
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