منابع مشابه
Lessons (Not Yet) Learned
· Despite a significant influx of charitable dollars over the last 10 to 20 years, solutions to complex social problems remain elusive, while philanthropy has been facing growing pressure to account for its tax-free dollars; to demonstrate, replicate, and scale success; and to be transparent about failed social investments. · When foundations and their nonprofit partners ignore a failure and mo...
متن کاملSpace Weapons: Not Yet
In this paper I attempt to sketch the utility of space weaponry, primarily from the point of view of the United States. In this I draw upon the excellent RAND book, “Space Weapons, Earth Wars.” That study was commissioned by LGen Roger DeKok, DCS Plans and Programs, HQ USAF. I am guided also by the views expressed in presentations and discussions of which I am aware over the past year . But the...
متن کاملDie—but not just yet
eterochromatin’s repressive hold on DNA transcription can only be relinquished when activators enter the nucleus. Or so the theory goes. But now Vanessa Witte, Andreas Baur (University of Erlangen, Germany), and colleagues find that a heterochromatin component can be pulled from the nucleus by both the HIV protein Nef and activated integrins. “This is a really new concept—that chromatin-associa...
متن کاملNot yet a GM nation
" We won't swallow it " (Daily Mirror) and " GM comes a cropper as Britain says a huge No " (Daily Express) were typical headlines greeting the results of the UK's public consultation on GM food. The government-funded " GM Nation? " survey showed that only 2% of people would eat it. 95% were worried that growing GM plants would contaminate non-GM ones, 93% felt not enough was known about long-t...
متن کاملHow Einstein Did Not Discover
What powered Einstein’s discoveries? Was it asking naïve questions, stubbornly? Was it a mischievous urge to break rules? Was it the destructive power of operational thinking? It was none of these. Rather, Einstein made his discoveries through lengthy, mundane investigations, pursued with tenacity and discipline. We have been led to think otherwise in part through Einstein’s brilliance at recou...
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ژورنال
عنوان ژورنال: Nature
سال: 2003
ISSN: 0028-0836,1476-4687
DOI: 10.1038/422563a