Uncategorized
- 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 […]
- Tech
Bartending lessons for microassembly
Engineers have demonstrated the feasibility of quickly assembling identical microcircuit components by agitating subunits in a liquid.
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Marrow cells take up residence in wounds
Bone marrow–derived cells linger in skin wounds much longer than previously thought, aiding in healing.
- Physics
Orbiting relativity test gets slow start
Unexpected but necessary adjustments to a satelliteborne test of relativity theory have slashed the time available to collect data.
- Tech
Transmuting a powerful poison
A new chemical process for fuel cells powered by hydrocarbons eliminates carbon monoxide that would clog fuel-cell electrodes while also extracting energy from the troublesome gas.
- Chemistry
Bacteria send out molecular scrounger for copper
Scientists have discovered the organic molecule that bacteria use to take up copper, which the microbes then use to chemically crack methane.
- Humans
Rembrandt’s eye saw no depth
The 17th-century Dutch artist Rembrandt lacked stereoscopic vision, an optical analysis of his self-portraits suggests.
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Far from being a pathology, the eye cast noted in this article is exactly what one would expect for a right-eye-dominant artist. A dominant eye would see itself directly in a mirror but would observe the other eye looking at an angle away from the median. Before concluding that Rembrandt had an anomalous visual condition, […]
- Health & Medicine
Hepatitis B vaccine linked to MS
People who develop multiple sclerosis are more likely than others to have received a hepatitis B vaccination in recent years.
- Materials Science
Heat-controlled implant delivers insulin on demand
The field of drug delivery is literally heating up, with the development of a new polymer implant that releases insulin in response to changes in temperature.
- Physics
Information, Please
Understanding whether the information swallowed by black holes is destroyed forever may provide physicists with new clues for unifying gravity and quantum theories.
