Word: authors
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Dates: during 2000-2009
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...high numbers? Jim Anthony, chair of the department of epidemiology at Michigan State University and an author of the study, says U.S. drug habits have to do, in part, with the country's affluence - many Americans can afford to spend their income on recreational drugs. Another factor may be an increasing awareness that marijuana may be less toxic than other drugs, such as tobacco or alcohol. (However, the study also found that the U.S. is among the leading countries in the percentage of respondents who have tried tobacco and alcohol). As for the popularity of cocaine, the reason may simply...
...against disease. Increased carbon dioxide concentrations in the atmosphere also lead to more acidic seas, which impairs the ability of corals to form their skeletal reefs. (In acidic water, the reefs simply dissolve.) "Corals appear to be particularly sensitive to the buildup of CO2," says Kent Carpenter, the lead author of the Science study and the director of GMSA. "The corals will be the canary in the coal mine in terms of the effect climate change will have on our oceans...
...eventually be able to provide a few hours' notice for people to find safe haven prior to quakes. As the horrific images from China demonstrate, the effort is well worth the alternative. "Predicting earthquakes is the final goal for seismologists," says Fenglin Niu, the research team's lead author and a Rice University seismologist. "This is a start...
...research team theorizes that the immense amount of pressure building along the fault causes small cracks within the rock during the final hours before an earthquake, increasing rock density and slowing the transmission signals. "The more cracks you have, the slower the seismic velocity," says study co-author Paul Silver, a geophysicist with the Carnegie Institution of Washington. Still unknown is whether there is any significance to the fact that the magnitude-3 quake had a much longer pre-seismic signal than the lower-magnitude quake, or whether it was simply because its magnitude was larger and its epicenter closer...
...Florida's per capita use is 50% above the national average, and we've lost half the wetlands that used to recharge our aquifers. So water shortages threaten to limit growth in a way that wetlands regulations or bad headlines never could. "Florida is astonishingly wasteful," says Cynthia Barnett, author of Mirage: Florida and the Vanishing Water of the Eastern U.S. Now the Orlando area is pushing to suck water out of rivers to its north, local utilities are jacking up water rates as much as 35%, and South Florida's water board may cap withdrawals from Everglades aquifers...