Word: andreas
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Dates: during 1990-1999
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...Andrea Sachs/New York
...field that's moving quickly." The two editors invited a parade of working scientists from around the world to brief the staff members. "We were able to bring the whole group up to speed on state-of-the-art technologies and theories," says Seaman. The resulting effort, coordinated by Andrea Dorfman, chief reporter of the science section, offers an unblinking look at the promises, risks and eccentric personalities shaping the field. "There's plenty of good news here," says Seaman, "but we don't shy away from the sobering ethical questions...
...J.F.O. McAllister. With reporting by Andrea Sachs/New York
...With reporting by Dan Cray/Los Angeles, Andrea Dorfman/New York and Kate Noble/Cambridge
Scientists have tried ever since to reactivate the enzyme that lengthens the tips, known as telomeres. Last January they succeeded: Andrea Bodnar and colleagues from the Geron Corp. in Menlo Park, Calif., activated the enzyme telomerase, extended the telomeres and lengthened the life-span of cells in culture by at least 20 divisions past the Hayflick limit. In November, Geron scored another first by reconstituting the telomeres of embryonic stem cells, which are renowned for their ability to turn into any type of cell, making it theoretically possible to rejuvenate parts of any organ with a simple injection...