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We summarize the week's scientific breakthroughs every Thursday.
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		AnimalsThe Brazilian flea toad may be the world’s smallest vertebrate
Brazilian flea toads are neither a flea nor a toad, but they are almost flea-sized. The frogs are small enough to fit on a pinkie fingernail.
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		Health & MedicineSnake venom toxins can be neutralized by a new synthetic antibody
A lab-made protein protected mice from lethal doses of paralyzing toxins found in a variety of snakes, a new study reports.
By Meghan Rosen - 			
			
		PlantsOn hot summer days, this thistle is somehow cool to the touch
In hot Spanish summers, the thistle Carlina corymbosa is somehow able to cool itself substantially below air temperature.
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		PlantsAncient trees’ gnarled, twisted shapes provide irreplaceable habitats
Traits that help trees live for hundreds of years also foster forest life, one reason why old growth forest conservation is crucial.
By Jake Buehler - 			
			
		AnimalsA new book explores the transformative power of bird-watching
In Birding to Change the World, environmental scientist Trish O’Kane shows how birds and humans can help one another heal.
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		NeuroscienceAncient viruses helped speedy nerves evolve
A retrovirus embedded in the DNA of some vertebrates helps turn on production of a protein needed to insulate nerve cells, aiding speedy thoughts.
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		AgricultureMixing up root microbes can boost tea’s flavor
Inoculating tea plant roots with nitrogen-metabolizing bacteria enhances synthesis of theanine, an amino acid that gives tea its savoriness.
By Nikk Ogasa - 			
			
		Health & MedicineNewfound immune cells are responsible for long-lasting allergies
A specialized type of immune cell appears primed to make the type of antibodies that lead to allergies, two research groups report.
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		AnimalsDoes this drone image show a newborn white shark? Experts aren’t sure
If a claim of the first-ever sighting of a newborn white shark holds, it could help solve a mystery of where adult white sharks give birth.
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		AnimalsMigratory fish species are in drastic decline, a new UN report details
The most comprehensive tally of how migrating animals are faring looks at more than 1,000 land and aquatic species and aims to find ways to protect them.
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		Artificial IntelligenceHow do babies learn words? An AI experiment may hold clues
Using relatively little data, audio and video taken from a baby’s perspective, an AI program learned the names of objects the baby encountered.
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		NeuroscienceA new device let a man sense temperature with his prosthetic hand
A device that can be integrated into prosthetic hands capitalizes on phantom sensations to enable users to sense hot and cold.
By Simon Makin