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- How does the brain react to virtual reality? Completely different pattern of activity in brain
- Asteroid impacts on Earth make structurally bizarre diamonds
- Many animals steal defenses from bacteria: Microbe toxin genes have jumped to ticks, mites and other animals
- Pain and itch in a dish: Skin cells converted into pain sensing neurons
- Enabling biocircuits: New device could make large biological circuits practical
- Turtles and dinosaurs: Scientists solve reptile mysteries with landmark study on the evolution of turtles
- People ate mammoth; Dogs got reindeer
- Tropical inspiration for an icy problem
| How does the brain react to virtual reality? Completely different pattern of activity in brain Posted: 24 Nov 2014 01:29 PM PST Neurophysicists studying a key brain region where Alzheimer's disease begins have discovered how the brain processes virtual reality. 'The pattern of activity in a brain region involved in spatial learning in the virtual world is completely different than in the real world,' said the professor of physics, neurology, and neurobiology. |
| Asteroid impacts on Earth make structurally bizarre diamonds Posted: 24 Nov 2014 09:56 AM PST Scientists have settled a longstanding controversy over a purported rare form of diamond called lonsdaleite -- a type of diamond formed by impact shock, but which lacks the three-dimensional regularity of ordinary diamond. |
| Posted: 24 Nov 2014 09:54 AM PST Bacteria compete for resources in the environment by injecting deadly toxins into their rivals. Researcher have now discovered that many animals steal toxins from bacteria to fight unwanted microbes growing on them. Genes for these toxins have jumped from bacterial to animals. These genes are now permanently incorporated into the genomes of these animals. Deer ticks, which can carry Lyme disease, are one of the many diverse organisms in which toxin gene transfers from bacteria to animal has occurred. |
| Pain and itch in a dish: Skin cells converted into pain sensing neurons Posted: 24 Nov 2014 09:53 AM PST After more than six years of intensive effort, and repeated failures that made the quest at times seem futile, researchers have successfully converted mouse and human skin cells into pain sensing neurons that respond to a number of stimuli that cause acute and inflammatory pain. |
| Enabling biocircuits: New device could make large biological circuits practical Posted: 24 Nov 2014 09:53 AM PST Researchers have made great progress in recent years in the design and creation of biological circuits -- systems that, like electronic circuits, can take a number of different inputs and deliver a particular kind of output. But while individual components of such biological circuits can have precise and predictable responses, those outcomes become less predictable as more such elements are combined. Scientists have now come up with a way of greatly reducing that unpredictability, introducing a device that could ultimately allow such circuits to behave nearly as predictably as their electronic counterparts. |
| Posted: 24 Nov 2014 07:32 AM PST A team of scientists has reconstructed a detailed 'tree of life' for turtles. Next generation sequencing technologies have generated unprecedented amounts of genetic information for a thrilling new look at turtles' evolutionary history. Scientists place turtles in the newly named group 'Archelosauria' with their closest relatives: birds, crocodiles, and dinosaurs. |
| People ate mammoth; Dogs got reindeer Posted: 24 Nov 2014 04:48 AM PST Biogeologists have shown how Gravettian people shared their food 30,000 years ago. Around 30,000 years ago Predmosti was inhabited by people of the pan-European Gravettian culture, who used the bones of more than 1000 mammoths to build their settlement and to ivory sculptures. Did prehistoric people collect this precious raw material from carcasses -- easy to spot on the big cold steppe -- or were they the direct result of hunting for food? |
| Tropical inspiration for an icy problem Posted: 24 Nov 2014 04:47 AM PST Ice poses major impediments to winter travel, accumulating on car windshields and airplane wings and causing countless unsuspecting pedestrians to dramatically lose their balance. Scientists have now developed a new way to prevent ice buildup on surfaces like airplane wings, finding inspiration in an unusual source: the poison dart frog. |
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