Word: harmlessness
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Dates: during 2000-2009
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...first bit of luck came in the 1950s, when the U.S. banned imports of British goats and sheep. Reason: a flock of British sheep had a degenerative brain disease called scrapie. Scrapie is harmless to humans, it turns out, and generally harmless to cattle as well, even when infected sheep tissues are injected directly into a cow's brain. But scientists believe some sheep carcasses, ground up to add to British cattle feed, carried an unusual form of the disease that did manage to infect cows. That variant, renamed BSE, began to show up in British herds in the 1980s...
Finally, Schatten and his team were ready to try a DNA transfer (see diagram). This first effort was meant only to test the technique, so they decided to use a gene that occurs naturally in jellyfish, where it directs the production of a harmless protein that glows with a greenish light under the right illumination. Mice, rabbits and other creatures who have had the same gene inserted actually do shine dimly; while ANDi (his name is a backward acronym for "inserted DNA") does not, the scientists have detected traces of the gene in his muscle, hair, cheek and blood cells...
...questions than answers. Because their resolution is so high, the machines pick up the tiniest abnormalities and don't always distinguish between the benign and the life threatening. Faced with ambiguous results, patients often undergo a series of follow-up, sometimes invasive tests--that turn up nothing more than harmless scar tissue...
Moreover, most initiations visible to the public eye are harmless, officials...
...students should understand that Harvard's decision reflects only the University's traditional reluctance to ban students' access to any book, music, art, or other source of knowledge. It is not meant as an assurance to students that downloading music via Napster is beneficial, harmless, or legal...