Uncategorized
- Chemistry
Buckyballs Can Come from Outer Space
A new analysis settles the question of whether carbon molecules found in meteorites have an extraterrestrial origin.
- Math
DNA’s Error-Detecting Code
Computers employ a variety of schemes to check whether a chunk of digital information–transmitted as a message, stored in a database, or functioning as a set of instructions–remains error-free. Such error-detection codes would detect, for example, the change of one bit from 0 to 1 or 1 to 0 in corrupted data. Nucleotides may be […]
- Math
Abbott and Costello’s Wacky Math
The Math in the Movies Web page (http://world.std.com/~reinhold/mathmovies.html) provides an annotated list of films in which mathematics plays some sort of role. The choices range from the calculus lessons of Stand and Deliver to the mystifying numerology of the 1998 thriller Pi. Among the notable omissions are several movies featuring the comedy team of Bud […]
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Gender Gap: Parasites’ bias for big animals gives female mammals longevity
Parasites infect male mammals more often than females, possibly contributing to the tendency among mammals of males to die earlier than females.
- Animals
Eat the Kids: Are cannibal fish just freshening the O2?
In beaugregory damselfish, males that snack on some of the eggs supposedly in their care may end up benefiting the rest of the egg clutch by making more oxygen available.
- Chemistry
The Dirt on Art: Chemists test laser cleanup of paintings
A new experiment shows that lasers can be a safe tool for cleaning paintings.
- Health & Medicine
Acetaminophen in Action: Effect on an enzyme may stop pain, lower fever
The discovery of an enzyme scientists are calling cyclooxygenase-3, which is disabled by acetaminophen, might explain why this drug can stop pain and fever but not inflammation.
- Humans
From the March 22, 1930, issue
THE SUN’S NEW TRANS-NEPTUNIAN PLANET The Lowell Observatory has made the discovery of a celestial body whose rate of motion and path among the stars indicate that it is a new member of the sun’s family of planets out beyond Neptune. Twenty-five years ago, Dr. Percival Lowell, director and founder of the Observatory at Flagstaff, […]
- Archaeology
Visit Ancient Corinth
Hosted at the University of Pennsylvania, this elaborate, regularly updated Web site features historical, literary, and archaeological information about the ancient Roman colony of Corinth in Greece. Browser plug-ins allow you to fly through the city, traverse digital maps, and view three-dimensional models of various structures. Go to: http://corinth.sas.upenn.edu
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19130
I would hope that the artist’s conception of a black hole is not shared by many. The term hole was an unfortunate choice, since it conjures up an image of a tunnel rather than the actual sphere. In reality, the halo of light around the periphery of the black hole would cover the entire sphere […]
- Astronomy
Hole in the Middle: Are midsize black holes the missing link?
Two teams of astronomers reported that they had confirmed the existence of a new class of black hole.
- Earth
Cancer Causer? Researchers zero in on leukemia risks
Researchers add to mounting evidence that household pesticide exposure may be a significant risk factor for childhood leukemia.
