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16.04.2015
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By clicking Confirm, you are committing to buy this item from the seller if you are the winning bidder and have read and agree to the Global Shipping Program terms and conditions - opens in a new window or tab. Your bid is the same as or more than the Buy It Now price.You can save time and money by buying it now. Scientists Discover That Bacteria Have a Collective Memory Plastic Waste in the Ocean Will Outnumber Fish by 2050 When I Dream of a Planet in Recovery… Environmental Research Reveals Seattle Salmon are on Drugs — Thanks, Humans! Unlike other animals that change color, such as the squid and octopus, chameleons do not modify their hues by accumulating or dispersing pigments within their skin cells, the researchers found. To investigate how the reptiles change color, researchers studied five adult male, four adult female and four juvenile panther chameleons (Furcifer pardalis), a type of lizard that lives in Madagascar.


The iridophore cells contain nanocrystalsof different sizes, shapes and organizations, which are key to the chameleons' dramatic color shifts, the researchers said. Furthermore, the researchers found a deeper and thicker layer of skin cells that reflect a large amount of near-infrared sunlight. The researchers also manipulated the cells by subjecting them to solutions of varying concentrations, which caused the cells to swell or shrink. However, only adult male chameleons change color, especially when they see a rival male chameleon they want to chase away, or a female to attract, Milinkovitch said.
The findings may help engineers and physicists replicate the chameleon's color-changing capacities in new technology, such as appliances that eliminate reflection, Milinkovitch said.
As a staff writer for Live Science, Laura Geggel covers general science, including the environment and amazing animals. Delivery times may vary, especially during peak periods and will depend on when your payment clears - opens in a new window or tab.
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The former diva now reveals how she in fact loves changing diapers: "I love changing diapers. Instead, the lizards rely on structural changes that affect how light reflects off their skin, the researchers said. The scientists found that the chameleons had two superposed thick layers of iridophore cells — iridescent cells that have pigment and reflect light.


The chameleons can change the structural arrangement of the upper cell layer by relaxing or exciting the skin, which leads to a change in color, they found.
While these cells do not appear to change color, it's possible that they help the chameleons reflect heat and stay cool, the researchers said.
They filmed the chameleons' color changes using high-resolution videography and made numerical models that predict how the nanocrystals should reflect light. These modifications changed the distances between the nanocrystals, and altered their visible colors, just as the researchers predicted they would, Milinkovitch said. Females and young chameleons are dull-colored and have a very reduced upper layer of iridophore cells, he said. She has written for the Simons Foundation, Scholastic, Popular Science and The New York Times. If you reside in an EU member state besides UK, import VAT on this purchase is not recoverable. For instance, a male chameleon might be in a relaxed state when it's hanging out on a branch, and in an excited state when it sees a rival male. Laura grew up in Seattle and studied English literature and psychology at Washington University in St. She also explains how she Jay-Z is a great dad, and that they both sing lots and lots of songs for little Blue Ivy.
Well yea, we see - we guess the little girl is still too young to hear "Single Ladies", huh?



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