Uncategorized
- Math
Euler’s Sums of Powers
Investigating sums of powers has a long history, going back to Fermat and Euler.
- Humans
From the September 22, 1934, issue
Giant ocean liner ready for launch, synthetic vitamin C produces unexpected cures, and systematic problem solving in chimpanzees.
- Humans
Quick Flicks
The BrainPOP Web site boasts more than 200 animated movies with accompanying comics and activities that answer students’ questions about science, math, health, and technology. A host of characters explains tough concepts in an interesting and humorous way. Unfortunately, visitors to the site can view only two movies per day for free. A subscription to […]
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Considering the controversy that Thomas Gold engendered when he first postulated abiogenic origins of earthly hydrocarbons, it’s odd you didn’t mention his name in your article. Edgar T. LynkNiskayuna, N.Y. Although Gold, author of The Deep Hot Biosphere (1998, Copernicus), was a strong proponent of a nonbiological origin of hydrocarbons, he was not the first […]
- Earth
Deep Squeeze: Experiments point to methane in Earth’s mantle
Although today's fossil fuel reserves reside in Earth's crust, a new study suggests that hydrocarbon fuel might also nestle deep in the mantle, at depths of 100 kilometers or more.
- Health & Medicine
Walking Away from Dementia: Moderate exercise protects aging minds
Two fresh studies strengthen the case that physical activity, including walking at a moderate pace, protects the aging brain from cognitive decline and dementia.
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Roma Record: Paths of the Gypsy population’s diasporas
Tracking genetic mutations has given researchers a tentative picture of the migration patterns of the Roma, or Gypsies, over the last millennium.
- Physics
Spooky Timing: Quantum-linked photons coordinate clock ticks
Physicists have demonstrated a new technique for bringing distant clocks into closer synchronization by means of entangled photons whose quantum properties are mysteriously correlated.
- Plants
Morphinefree Mutant Poppies: Novel plants make pharmaceutical starter
A Tasmanian company has developed a poppy that produces a commercially useful drug precursor instead of full-fledged morphine, and a research team now reports how the plant does it.
- Health & Medicine
Sleep on It: Fitful slumber tied to diabetes risk
Disturbed slumber, or sleep apnea, appears to make people more susceptible to certain conditions that lead to diabetes.
- Paleontology
Big Gulp? Neck ribs may have given aquatic beast unique feeding style
The fossilized neck bones of a 230-million-year-old sea creature have features suggesting that the animal's snakelike throat could flare open and create suction to pull in prey.
- Humans
Letters from the September 25, 2004, issue of Science News
More of less is more The counterintuitive finding that atrazine is more likely to kill tadpoles when it is highly diluted (“Just a Tad Is Too Much: Less is worse for tadpoles exposed to chemicals,” SN: 7/10/04, p. 20: Just a Tad Is Too Much: Less is worse for tadpoles exposed to chemicals) reminds me […]
