Uncategorized
- Physics
Why isn’t the sky violet, Daddy?
A new analysis of why the sky looks blue reveals that the reason may be the combined effects of the atmosphere and of our eyes' color-sensing apparatus.
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Bipolar kids harbor unique brain trait
Children and teenagers with bipolar disorder, a severe mental ailment that involves sharp mood swings, display unusually low tissue volume in a brain area involved in learning to regulate emotions.
- Physics
In search of the imperfect nanocrystal
Semiconductor nanocrystals can incorporate property-enhancing impurities into their growing structures as long as the crystals have facets onto which such atoms can strongly adhere.
- Earth
Weighty evidence on testicular cancer
New evidence supports a theory that men who were exposed to excess estrogenic hormones at an early stage of fetal development may face an elevated risk of testicular cancer.
- Astronomy
A new X-ray eye on the cosmos
To study some of the hottest regions in the universe, the Japanese Aerospace Exploration Agency has launched the coldest instrument ever flown.
- Archaeology
Judeo-Christian ties buried in Rome
New radiocarbon dates from one of ancient Rome's underground cemeteries, or catacombs, indicates that these structures were built in the Jewish community more than a century before early Christians started to do the same.
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Cell death may spur aging
Genetic mutations in cells' internal powerhouses could contribute to aging by stifling tissue maintenance.
- Humans
Pushing Drugs
Pharmaceutical marketing toward both patients and physicians appears to influence which medicines get prescribed.
- Archaeology
Seeing Past the Dirt
Increasingly, researchers are using geophysical techniques such as ground-penetrating radar and magnetometers to target their excavations.
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19577
I’m currently writing a biography of RAF Squadron Leader Roger Bushell, the instigator of the plan to construct the three tunnels in Stalag Luft III. Last fall, I visited the site. Amazingly, it was difficult to see where the excavation team had been. I have also spoken to dozens of men who either helped build […]
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- Humans
From the July 20, 1935, issue
A warning sign for pilots, better methods for producing radioactive substances, and making potatoes grow better with ultrasound.
