Word: bada
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...final match of this grueling day that proved to be one of the highlights of the weekend for Harvard. Although it gave Penn three points on the scoreboard, Harvard got the real victory as Rechul forced Penn's 9th-ranked Bandele Adeniyi-Bada to fight down to the wire. Though he lost the match 5-6, Rechul's stellar performance against a top ranked wrestler--who has a 21-3 record and 59 takedowns--sent a strong message to his Ivy foes, giving them plenty to worry about this season and in seasons to come...
Closing out the weekend, his match provided a moral victory around which the team can now rally. The two schools meet again at EIWA's in several weeks and next time, Adeniyi-Bada and his Quaker team might not be so lucky...
...dating technique was conceived by Chemist Jeffrey Bada of the Scripps Institution of Oceanography while he was trying to date some fossil-laden sediment from the ocean floor. The standard method for determining the age of fossils is the so-called carbon 14 clock, which is based on the ratio of ordinary carbon atoms to atoms of the radioactive isotope carbon 14 found in the specimen. The carbon 14 atoms decay at a known rate and are not replenished after the creature dies; thus the proportion of ordinary carbon to carbon 14 slowly increases. But the carbon clock only works...
...Bada decided amino acids might help open those pages. Using standard lab equipment, he found that it was an easy matter to measure the ratio of left-handed to righthanded molecules in a common amino acid called isoleucine, and he was able to estimate the age of fossils from that ratio. What is more, his tests required only a tiny sampling of material and could be completed in a few hours. There is one serious hitch, he reports in Earth and Planetary Science Letters. Because the rate at which amino acids change their configuration varies significantly with heat, the temperature...
...check his theory, Bada dated a number of objects, including an ancient hominid bone dug up from East Africa's Olduvai Gorge by Anthropologist Louis S.B. Leakey. Its age, based on amino-acid dating, turned out to be 135,000 years-almost exactly the same as that deduced by Leakey from indirect geological evidence. Bada is still incredulous over the seemingly accurate results obtained by using his new clock. "It was so obvious and simple," he says, "I was just amazed that it hadn't been discovered before...