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Keyword: biology

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  • Land bridges linking ancient India, Eurasia were 'freeways' for biodiversity exchange

    03/26/2016 11:21:19 AM PDT · by JimSEA · 17 replies
    Science Daily ^ | 3/24/16 | Jesse L. Grismer, et. al.
    For about 60 million years during the Eocene epoch, the Indian subcontinent was a huge island. Having broken off from the ancient continent of Gondwanaland, the Indian Tectonic Plate drifted toward Eurasia. During that gradual voyage, the subcontinent saw a blossoming of exceptional wildlife, and when the trove of unique biodiversity finally made contact with bigger Eurasia, the exchange of animals and plants between these areas laid the foundations for countless modern species. "Today, mainland Asia and India have all this unique biodiversity -- but did the mainland Asian biodiversity come from India, or did the Indian biodiversity come from...
  • To Scientists' Surprise, Even Nonvenomous Snakes Can Strike at Ridiculous Speeds

    03/16/2016 6:11:27 PM PDT · by MtnClimber · 61 replies
    Smithsonian ^ | 15 Mar, 2016 | Marcus Woo
    The Texas rat snake was just as much of a speed demon as deadly vipers, challenging long-held notions about snake adaptations. When a snake strikes, it literally moves faster than the blink of an eye, whipping its head forward so quickly that it can experience accelerations of more than 20 Gs. Such stats come from studies of how a snake lunges, bites and kills, which have focused mostly on vipers, in part because these snakes rely so heavily on their venomous chomps. "It's the lynchpin of their strategy as predators," says Rulon Clark at San Diego State University. "Natural selection...
  • Appendixes Might Actually Be Useful, According To New Studies

    01/20/2016 6:39:11 AM PST · by SoFloFreeper · 34 replies
    bustle.com ^ | 1/19/16 | Lily Feinn
    Most people think little about their appendix, and that's only natural, because the function of the appendix has been considered unknown - until now. New research supports that our appendixes might actually be useful after all, and doctors may soon be changing their tune about this neglected organ. The appendix, which looks like a slim tube measuring between two and four inches long, sits in our lower right abdomen. It was originally thought to be vestigial - a part of the body that evolution forgot. Popular belief was that this leftover organ was originally part of a fermenting chamber in...
  • 102 new species described by the California Academy of Sciences in 2015

    12/24/2015 10:35:46 AM PST · by JimSEA · 13 replies
    Science Daily ^ | December 17, 2015 | California Academy of Sciences
    In 2015, researchers at the California Academy of Sciences added 102 new plant and animal species to our family tree, enriching our understanding of Earth's complex web of life and strengthening our ability to make informed conservation decisions. The new species include two frogs, 23 ants, three beetles, eight wasps, 11 spiders, 26 fishes, nine sea slugs, two corals, nine plants, one water bear, and eight new viruses. More than a dozen Academy scientists--along with several dozen international collaborators--described the discoveries. Proving that our planet contains unexplored places with never-before-recorded plants and animals (with their own set of evolving viruses),...
  • Tourist captures image of mysterious sea monster off Grecian coastline

    10/29/2015 2:27:35 AM PDT · by WhiskeyX · 20 replies
    Fox News ^ | October 28, 2015 | Sky McCarthy
    A Scottish tourist unwittingly captured an unidentifiable sea monster while vacationing in Greece. Harvey Robertson was on a boat cruise off the coast of Parga, sailing through sea caves with his family. He was initially just trying to capture the unusual color of the surrounding water with his iPhone camera. What he shot instead has baffled those across the Internet—and marine scientists. Looking back through his camera, Robertson saw that he had captured a grey creature that resembles an elongated manatee. The strange animal appears to pop out of the water in one photo, then disappears under the greenish water...
  • Biologists discover bacteria communicate like neurons in the brain

    10/21/2015 1:13:24 PM PDT · by JimSEA · 8 replies
    Science Daily ^ | 10/21/2015 | University of California - San Diego
    Biologists at UC San Diego have discovered that bacteria--often viewed as lowly, solitary creatures--are actually quite sophisticated in their social interactions and communicate with one another through similar electrical signaling mechanisms as neurons in the human brain. In a study published in this week's advance online publication of Nature, the scientists detail the manner by which bacteria living in communities communicate with one another electrically through proteins called "ion channels."
  • Is Another Human Living Inside You?

    09/20/2015 1:43:08 AM PDT · by WhiskeyX · 31 replies
    BBC ^ | 18 September 2015 | David Robson
    Once upon a time, your origins were easy to understand. Your dad met your mum, they had some fun, and from a tiny fertilised egg you emerged kicking and screaming into the world. You are half your mum, half your dad – and 100% yourself. Except, that simple tale has now become a lot more complicated. Besides your genes from parents, you are a mosaic of viruses, bacteria – and potentially, other humans. Indeed, if you are a twin, you are particularly likely to be carrying bits of your sibling within your body and brain. Stranger still, they may be...
  • Earth's mineralogy unique in the cosmos

    08/27/2015 2:38:18 PM PDT · by JimSEA · 27 replies
    Science Daily ^ | 8/26/2015 | Carnegie Institution, Robert Hazen
    New research from a team led by Carnegie's Robert Hazen predicts that Earth has more than 1,500 undiscovered minerals and that the exact mineral diversity of our planet is unique and could not be duplicated anywhere in the cosmos. Minerals form from novel combinations of elements. These combinations can be facilitated by both geological activity, including volcanoes, plate tectonics, and water-rock interactions, and biological activity, such as chemical reactions with oxygen and organic material.
  • Bones Of Contention: Dinosaur Cells Survived Millions Of Years Trapped In Bone

    08/15/2015 8:58:12 AM PDT · by JimSEA · 46 replies
    Science 2.0 ^ | Mary Schwietzer
    Twenty years ago Mary Schweitzer found herself the closest that anyone has ever been to a living dinosaur. As she examined a thin slice of a T. Rex bone fragment under a microscope, she realized she was looking at what appeared to be preserved red blood cells- cells which had no place in a 65 million year old fossil. It was the first time that anyone had found evidence that biological material could survive the passage of millions of years and still retain its molecular structure, challenging one of the central beliefs of paleontologists. Proving that what she was seeing...
  • Human Skin Gets Thinner In Space, International Space Station Study

    07/22/2015 1:16:51 PM PDT · by BenLurkin · 10 replies
    newseveryday.com ^ | 22 Jul '15 14:43PM | Ashwin Subramania -
    "We use femtosecond laser pulses. We scan the skin and we get signals from the skin, particularly fluorescence, as well as another signal called second harmonic generation. So with these two signals we can build up images and get a precise look into the skin with a high resolution. The resolution is a factor of one thousand (times) better than ultrasound....." "So far we've got interesting results from three astronauts. It seems that there is a strong production of collagen; so suddenly these astronauts have more collagen. It means there is some sort of anti-ageing effect, at least in the...
  • DARPA Wants to Create Synthetic Organisms to Terraform and Change the Atmosphere of Mars

    06/27/2015 8:25:48 PM PDT · by LibWhacker · 60 replies
    Hacked ^ | 6/25/15 | Giulio Prisco
    DARPA Wants to Create Synthetic Organisms to Terraform and Change the Atmosphere of Mars Biotech, Space, Synthetic Biology June 25, 2015 by Giulio Prisco 435SHARES TwitterLinkedinFacebook The Defense Advanced Research Projects Agency (DARPA) believes that it's on the way to creating synthetic organisms capable of terraforming Mars into a planet that looks more like Earth, Motherboard reports.Speaking at a recent biotech conference hosted by DARPA, Alicia Jackson, deputy director of DARPA’s Biological Technologies Office (BTO) said: For the first time, we have the technological toolkit to transform not just hostile places here on Earth, but to go into space not...
  • Biologists Invoke the Past in Modern Bacteria

    06/19/2015 2:01:39 AM PDT · by LibWhacker · 5 replies
    Quanta Magazine ^ | 6/18/15 | Emily Singer
    Biologists Invoke the Past in Modern Bacteria By swapping ancient genes into modern E. coli, scientists hope to tease out the rules of evolution. Yaman OzakinBetul Kacar, a research fellow at Harvard University, has revived an ancient protein in E. coli. By: Emily SingerJune 18, 2015 One of the greatest challenges in evolutionary biology is trying to piece together the history of life based on fragmentary evidence and limited knowledge of the forces at play — the rich tapestry of climate, geology and living things that forms the backdrop for evolution. How, for example, did the light-sensitive molecules that enable...
  • Ice age camel bones found in Yukon redraw species' lineage

    06/10/2015 1:31:42 PM PDT · by Red Badger · 17 replies
    Phys.Org ^ | 06-10-2015 | Staff
    Miners in northwestern Canada have discovered ice age camel bones whose DNA is forcing scientists to redraw the family tree of the now-extinct species. Grant Zazula, a paleontologist with the Yukon's Department of Tourism and Culture, said three fossils recovered from a gold mine in the Klondike in 2008 are the first western camel bones found in the territory or Alaska in decades. Scientists had believed western camels that once lived in North America were related to llamas and alpacas common to South America, but they now have genetic proof that the animals are more closely tied to the camels...
  • The Story of Earth: How Life and Rocks Co-Evolved

    03/31/2015 8:58:02 PM PDT · by onedoug · 27 replies
    Carnegie Institution for Science ^ | 29 JUL 2014 | Robert Hazen, Lecturer
    Incredible (IMHO) exposition of the co-dependence of "evolutionary" minerology and biology.
  • Life on Europa?

    03/16/2015 3:14:41 PM PDT · by JimSEA · 40 replies
    Geology.com ^ | 3/16/2015 | Staff
    For the past several centuries everyone believed that Mars was the most likely body in our solar system to support life beyond Earth. But, after centuries of telescope observation, decades of spacecraft exploration and several robots exploring its surface the promise of discovering life on Mars remains elusive. Now, scientific attention is being focused on Europa, the fourth largest of Jupiter's 67 confirmed moons. It may be an even better candidate for finding life than Mars. For life to be present the three basic requirements are: 1) liquid water; 2) chemical building blocks; and, 3) a source of energy. Europa...
  • Majority of Biology Teachers Hesitant About Evolution

    03/10/2015 8:20:02 PM PDT · by SeekAndFind · 139 replies
    Secular scientists are at a loss over how to get their favorite origins story, Darwinian evolution, a more confident presence in schools.After nearly a century of one-sided control of education on origins, Darwinian scientists shouldn’t be faced with this dilemma. After all, their own theory presupposes that human beings are material entities that can be conditioned like other animals. And yet, despite a near total exposure to Darwinian evolution in textbooks, museums, educational TV – and often in the general culture, such as in many sci-fi movies – a substantial majority of the public doesn’t buy the completely materialistic...
  • SCIENTISTS FIND ORGANISM THAT HASN’T EVOLVED IN 2 BILLION YEARS

    02/03/2015 4:50:47 PM PST · by bkopto · 44 replies
    Breitbart/UPI ^ | Feb 3, 2015 | staff
    Scientists at the University of California, Los Angeles, say they’ve discovered a microorganism that hasn’t evolved in more than two billion years — the longest ever absence of evolutionary evidence in a single species. Researchers say the deep sea creature — whose evolutionary stasis is detailed in the journal PNAS doesn’t disprove evolution so much as bolster Darwin’s case. “The rule of biology is not to evolve unless the physical or biological environment changes, which is consistent with Darwin,” lead study author J. William Schopf, a professor of earth, planetary and space sciences at UCLA. SNIP Schopf says it is...
  • Sex and the Existence of God

    02/02/2015 12:07:49 PM PST · by Oldpuppymax · 15 replies
    Coach is Right ^ | 2/2/15 | LtCol Forest R. Lindsey (Ret)
    Engineering is the science and practice of designing things, usually systems and sometime systems of systems. Engineers understand that nothing worthwhile happens by accident in this universe, ever. The probabilities are too vastly against it. With 70,000 gene pairs in the average chromosome and 12 different proteins at work, that would mean at least odds of (70,000 X 70,000 X 12 X 12) = 7.0 X 10^11 if you could get all that stuff in the same place at the same time without the added consideration of the right conditions. All the monkeys with their typewriters would have several thousands...
  • Is Pedophilia Okay if You’re “Born That Way”?

    02/01/2015 2:42:52 PM PST · by Tolerance Sucks Rocks · 64 replies
    The New American ^ | February 1, 2015 | Selwyn Duke
    “Now, many experts view it as a sexual orientation as immutable as heterosexuality ... a deep-rooted predisposition ... that becomes clear during puberty and does not change.”The above idea was expressed with respect to homosexuality decades ago and since has become left-wing dogma. The thinking is that if someone was “born that way,” if the behavior is “natural” for him and he didn’t choose his feelings, how could it be wrong?Yet the opening quoted line wasn’t penned decades ago — it’s only two years old. And homosexuality wasn’t the focus.It was about pedophilia.Here is the complete quotation, as published by...
  • Dangerous bee hives provide rich harvest of honey

    01/21/2015 10:03:43 AM PST · by SandRat · 25 replies
    Shar Porier
    MCNEAL — Once it housed soldiers stationed at Fort Huachuca, then it was moved to McNeal and was filled with the sounds of happy feet dancing and the chattering of ladies at coffee cloches. Now abandoned, there are new inhabitants that really are no fun — killer bees. The irritable, six-legged flying pollinators have been in the building on Frontier Road for a number of years, tending huge honeycombs and creating problems for those who walk their dogs, ride horses or just take a morning stroll. If one puts out nectar for the hummingbirds and orioles in spring within the...