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...controversial paper was written by geoscientists Gerta Keller of Princeton University and Thierry Addate of the University of Lausanne, in Switzerland. Both researchers knew that challenging the impact doctrine would not be easy. The asteroid charged with killing the dinosaurs, after all, left more than the Chicxulub crater as its calling card. At the same 65-million-year depth, the geologic record reveals that a thin layer of iridium was deposited pretty much everywhere in the world. Iridium is an element that's rare on Earth but common in asteroids, and a fine global dusting of the stuff is precisely...
...often the little things that change your life. For Joanne Goldblum, it was toilet paper. As a social worker in Connecticut, she kept noticing that the families she worked with didn't have any. Eventually a client told her that TP isn't covered by food stamps or any other government-assistance program, so people just improvise. (Fast-food napkins, anyone?) In fact, no hygiene supplies are covered--including diapers...
...paper, published by Cato in April, found that in the five years after personal possession was decriminalized, illegal drug use among teens in Portugal declined and rates of new HIV infections caused by sharing of dirty needles dropped, while the number of people seeking treatment for drug addiction more than doubled...
...Cato paper reports that between 2001 and 2006 in Portugal, rates of lifetime use of any illegal drug among seventh through ninth graders fell from 14.1% to 10.6%; drug use in older teens also declined. Lifetime heroin use among 16-to-18-year-olds fell from 2.5% to 1.8% (although there was a slight increase in marijuana use in that age group). New HIV infections in drug users fell by 17% between 1999 and 2003, and deaths related to heroin and similar drugs were cut by more than half. In addition, the number of people on methadone and buprenorphine treatment...
...upcoming paper in The Review of Financial Studies finds that since the global settlement, research from investment banks has, in certain ways, become less biased. An analyst is no longer more likely to issue a "buy" rating when his firm is doing investment banking business with the company he's covering-as used to be the case. "It's leveled the behavior on the optimistic side, and that seems like a good result," says Leonardo Madureira, a finance professor at Case Western Reserve University and one of the paper's authors. Analysts, though, are still much less likely to issue...