| Nov 20, 2013
| 7:19 PM
DNA and proteins are arguably the most important components of the cells of living creatures. Both are produced by stringing together long chains of individual molecules — amino acids in the case of proteins and nucleotides in DNA.
| Nov 18, 2013
| 10:47 AM
College students who cheated on a simple task were more likely to want government jobs, researchers from Harvard University and the University of Pennsylvania found in a study of hundreds of students in Bangalore, India.
Their results, recently released...
| Nov 18, 2013
| 5:42 PM
Less than a week after the American Heart Assn. and the nation's cardiologists issued guidelines that would greatly expand the number of Americans taking a statin medication, the guidelines have been faulted for overestimating patients' risk of heart...
| Nov 17, 2013
The celebration of the 150th anniversary of Abraham Lincoln's Gettysburg Address offers an opportunity not simply to memorialize an extraordinary speech; it provides a model and a mirror for writing and speechmaking today.
"It's only words": This phrase...
| Nov 14, 2013
| 12:39 PM
Google Books, the search sovereign's vast and controversial digital library of scanned books, won a huge legal victory Thursday from the same federal judge who had thrown the project into legal limbo 2 1/2 years ago.
District Judge Denny Chin in New...
| Nov 13, 2013
| 6:45 PM
Has a black hole mystery just been solved?
Writing in the journal Nature, a team of scientists said it found traces of nickel and iron in the powerful jets shooting out of black hole candidate 4U 1630-47, a small black hole just a few times the mass...
| Nov 7, 2013
| 3:40 PM
Trans fat was the first man-made fat to become part of our food supply more than a century ago when a German scientist presented Procter & Gamble with ways to add hydrogen to cottonseed oil. Because the product looked like lard (though originally intended...
| Nov 27, 2013
| 4:24 PM
The United States may be emitting 50% more methane, a potent greenhouse gas, than the federal government had previously estimated, according to a new study in the Proceedings of the National Academy of Sciences.
Though carbon dioxide from the combustion...
| Oct 31, 2013
| 1:22 PM
The search for an HIV vaccine has taken an important step forward after researchers at the Scripps Research Institute in La Jolla managed to capture molecular images of a protein spike that allows the deadly virus to invade human immune cells to hack...
| Oct 24, 2013
| 4:38 PM
MEXICO CITY — It was a minor gaffe, but a telling slip that spoke volumes about the tangled love-hate relationship between Mexico and its northern neighbor.
The respected newspaper Reforma, in an article Wednesday about new allegations of U.S....
| Oct 23, 2013
| 10:06 PM
William H. Sullivan, a veteran diplomat who oversaw the "secret war" in Laos, aided in negotiations to end U.S. military involvement in Vietnam and was the last American ambassador to Iran, died Oct. 11, one day before his 91st birthday.