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19417
While reading about the amazing properties of Archimedes’ Stomachion, I wondered whether a mere child’s toy would exhibit such mathematical precision, with each vertex falling on a lattice point of a 12-by-12 grid. Perhaps Archimedes took the basic plan of the toy and tweaked it to see what properties he could induce. Jeffry D. MuellerEldersburg, […]
- Physics
The Rise of Antibubbles
Tiny globules of water enclosed by thin shells of air in water that look like bubbles but don't act like them have recently become the objects of serious study.
- Math
Extra Time, Math, and the SAT
Extra time on the math portion of the SAT helps the most able students the most.
- Humans
From the May 5, 1934, issue
Steel pipes of the Boulder Canyon project, diphtheria and the blood-brain barrier, and weather effects of volcanic eruptions.
- Astronomy
Closing In on a Monster: A black hole’s dusty environs show themselves
The first clear picture of the immediate surroundings of a supermassive black hole confirms that these gravitational monsters hide behind thick belts of dust.
- Health & Medicine
Cord Blood to the Rescue: Infusions help babies with Hurler’s syndrome
Umbilical cord blood transplants boost overall health and survival in patients with the rare hereditary condition called Hurler's syndrome.
- Materials Science
Next High-Tech Polishing Fluid: Tea—A new brew for the computer industry
A concoction based on green tea may speed up manufacturing of precision components for computer hard-disk drives while reducing toxic wastes.
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Waste Not: Proteins suggest ways to thwart muscle loss
Researchers have now revealed details of the biochemical signals that drive muscle atrophy.
- Paleontology
Ancient Buzzing: German site yields early hummingbird fossils
Excavations in Germany have yielded the only known fossils of hummingbirds from the Old World and by far the oldest such fossils unearthed anywhere.
- Animals
Toxin Takeout: Frogs borrow poison for skin from ants
Scientists have identified formicine ants as a food source from which poison frogs acquire their chemical weapons.
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19416
The phenomenon described in your article, an animal manufacturing natural poisons using chemical precursors in the environment, has been described before—in a work of science fiction! In Arthur Herzog’s 1974 novel The Swarm, later made into a movie, killer bees learned to metabolize organophosphate insecticides and incorporate those molecules into their venom. Dave LeisingLowell, Mich.
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Words in the Brain: Reading program spurs neural rewrite in kids
Children who are deficient readers show improvement in both reading skills and brain function when given intensive instruction in how written letters correspond to speech sounds, a brain-imaging study finds.
