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9579 |
duddy |
9 years ago |
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Pre-crastination
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Some of us may be guilty of procrastination, but we all are pre-crastinators at some level. Procrastination is a serious problem to many of us that like to put off work and cram the night before. Not only is procrastination a behavioral problem, but also one with a psychological implication. Procrastination is the "thief of time". On the other hand, precrastination, discovered to be the complete opposite, is the tendency to do things ahead of time - and really ahead of time- just for the sake of completion. Precrastination was found to be exhibited in pigeons as well. And the fact that we and pigeons have separated in phylogeny 300 million years ago suggests that precrastination is a behavior also found earlier in phylogeny. How has this be ...
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9129 |
ehd123 |
8 years ago |
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One-eyed pigeons are terrible with directions
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When homing pigeons fly home they rely on smells, magnetic fields, and vision to guide their way. But how important visual memory is for pigeons has long remained a mystery. According to a new study, pigeons that learned their way home with a blocked left eye couldn’t repeat the same journey when they wore a patch over their right eye, and vice versa. Instead, they flew slightly off course, following more of a curve than a straight line. Since birds lack a corpus callosum, this suggests that a birds’ lack of this key neural structure greatly affects how pigeons are able to find their way home. Source: http://rspb.royalsocietypublishing.org/content/282/1816/20151957 ...
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9086 |
duddy |
8 years ago |
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Earliest form of dentistry
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The earliest evidence of ancient dentistry we have is an amazingly detailed dental work on a mummy from ancient Egypt that archaeologists have dated to 2000 BCE.
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9065 |
duddy |
10 years ago |
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Dogs can read human emotions
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Dog owners often say they "know" that their dog understands what they’re feeling. Now, scientists have the evidence to back this up. Researchers tested 17 adult dogs of various breeds to see whether they could recognize emotional expressions in the faces and voices of humans and other dogs - an ability that’s considered a higher cognitive talent because two different senses are involved. Each dog took part in two test sessions with 10 trials. One by one, they stood facing two screens on which the researchers projected photos of unfamiliar but happy/playful human or dog faces versus the same faces with angry/aggressive expressions (as in the photo above). At the same time, the scientists played a single vocalization - either a dog bark, ...
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8730 |
duddy |
8 years ago |
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First ever image taken of a single protein
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Proteins are subatomic biomolecules. They're produced by cells, so it's logical to assume that they are much tinier than cells, and of course, much tinier than the organelles that produce them. In a remarkable achievement, scientists have now obtained the first-ever photographs of single proteins. Using a "holography electron microscope," researchers tested on a range of protein samples, all just a few nanometers in size. Hemoglobin, the protein that transports oxygen in red blood cells, and cytochrome c, the protein that transfers electrons within the body, were just two examples. Source: arXiv ...
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8439 |
duddy |
8 years ago |
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Spiders smaller than a grain of sand
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Two new species of spiders have been discovered in China, and neither of them are bigger than a grain of sand. They live in the damp litter of the forest, which is why they had gone unnoticed for so long. Both species are part of the Mysmenidae family, which are somewhat poorly understood orb-weaving spiders. Mysmena wawuensis (top) measures 0.75 mm, while Trogloneta yuensis (bottom) is 1.01 mm.
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8357 |
duddy |
10 years ago |
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8182 |
duddy |
9 years ago |
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Addicted to hookah smoking, this might change your mind
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As cigarette smoking rates fall, more people are smoking tobacco from hookahs: communal pipes that enable users to draw tobacco smoke through water. A new meta-analysis shows that hookah smokers are inhaling a large load of toxicants. According to the study, compared with a single cigarette, one hookah session delivers approximately 125 times the smoke, 25 times the tar, 2.5 times the nicotine and 10 times the carbon monoxide (CO). The latter stat accounts for the light-headedness and high that smokers experience when inhaling the smoke, since CO reduces the amount oxygen capable of binding to circulating red blood cells. In addition to these estimates, the Centers for Disease Control and Prevention recently reported that, for the first time ...
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8072 |
duddy |
8 years ago |
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7697 |
duddy |
10 years ago |
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House plants could one day power our computers
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Researchers have discovered a novel method to harness photosynthesis to create electricity. By attaching nanotubes to plant cells, the researchers were able to direct the electrons that plants free during photosynthesis down a wire and generate electrical current – and it was twice as powerful as electricity gathered from solar cells.
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7674 |
duddy |
10 years ago |
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World's largest aquatic insect
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The largest aquatic insect in the world has been discovered in China, with a wingspan of 21 cm. And those enormous tusks? They're for mating.
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7528 |
duddy |
9 years ago |
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7472 |
duddy |
9 years ago |
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7361 |
duddy |
8 years ago |
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Asteriod impacts
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The third largest asteroid to ever hit earth has been found in South Australia. According to scientists involved, the asteroid, which measured up to 20 km across, hit Earth approximately 360 million years ago. This was around the time of the Late Devonian mass extinction, strengthening the idea that asteroid impacts have been associated with many mass extinctions throughout the history of life on Earth.
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7304 |
duddy |
11 years ago |
