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Cell therapy could improve brain function for Alzheimer's disease
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Inhibitory interneurons are particularly important for managing brain rhythms. Researchers have uncovered the therapeutic benefits of genetically improving these interneurons and transplanting them into the brain of a mouse model of Alzheimer's disease. www.sciencedaily.com/releas...
Mammals share mechanisms controlling the heart with a 400 million-year-old fish
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Primitive air-breathing fish, whose direct ancestors first appeared around 400 million years ago, show mechanisms controlling the heart which were previously considered to be found only in mammals -- according to a new study. www.sciencedaily.com/releas...
A leopard may not change its spots but venomous creatures change their venom recipe often
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For a long time scientists believed that an animal's venom was consistent over time. However, through a close study of sea anemones, researchers found that animals change their venom several times over the course of a lifetime, adapting the potency and makeup of their venom to suit changing predators and aquatic environments. www.sciencedaily.com/releas...
Wildfires: Smoke and cloud interactions unexpectedly result in cooling
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For years, scientists determined that smoke, overall, diminishes clouds' cooling effect by absorbing light that the clouds beneath the aerosols would otherwise reflect. This new study does not dispute that phenomenon. However, more dominantly, the new study found that smoke and cloud layers are closer to each other than previously thought. This makes the clouds more reflective of light and, thus, accelerates the clouds' cooling effect. www.sciencedaily.com/releas...
These tropical hummingbirds make cricket-like sounds other birds can't hear
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Researchers have found that a tropical species of hummingbird called a black jacobin makes vocal sounds with an unusually high-frequency pitch that falls outside birds' normal hearing range. It's not yet clear whether the hummingbirds can even hear themselves, the researchers say. www.sciencedaily.com/releas...
Ancient reptile Captorhinus could detach its tail to escape predator's grasp
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A new study shows how a group of small reptiles who lived 289 million years ago could detach their tails to escape the grasp of their would-be predators -- the oldest known example of such behavior. www.sciencedaily.com/releas...
New drugs could help prevent hearing loss
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Researchers have discovered that inhibiting an enzyme called cyclin-dependent kinase 2 (CDK2) protects mice and rats from noise- or drug-induced hearing loss. The study suggests that CDK2 inhibitors prevent the death of inner ear cells, which has the potential to save the hearing of millions of people around the world. www.sciencedaily.com/releas...
Hubble finds huge system of dusty material enveloping the young star HR 4796A
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Astronomers have used NASA's Hubble Space Telescope to uncover a vast, complex dust structure, about 150 billion miles across, enveloping the young star HR 4796A. www.sciencedaily.com/releas...
Diverse tropical forests grow fast despite widespread phosphorus limitation
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Ecological theory says that poor soils limit the productivity of tropical forests, but adding nutrients as fertilizer rarely increases tree growth, suggesting that productivity is not limited by nutrients after all. Researchers resolved this apparent contradiction, showing that phosphorus limits the growth of individual tree species but not entire forest communities. Their results have sweeping implications for understanding forest growth and change. www.sciencedaily.com/releas...
Modified, 3D-printable alloy shows promise for flexible electronics, soft robots
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Researchers have taken a key step toward the rapid manufacture of flexible computer screens and other stretchable electronic devices, including soft robots. www.sciencedaily.com/releas...