TOP 100 CAMPING SITES
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| Climate Change Hits Poor Hardest in U.S. Climate change is disproportionately affecting the poor and minorities in the United States - a "climate gap" that will grow in coming decades unless policymakers intervene, according to a University of California study.Everyone, the researchers say, is already starting to feel the effects of a warming planet, via heat waves, increased air pollution, drought, or more intense storms. But the impacts - on health, economics, and overall quality of life - are far more acute on society's disadvantaged, the researchers found. [More] rss.sciam.com |
Birth Defect Study Casts Doubt on Phthalate Fears Hypospadias, one of the most common birth defects among baby boys, apparently is not increasing in the United States, casting doubt on whether boys are harmed by phthalates and other endocrine-disrupting chemicals thought to trigger reproductive abnormalities.Researchers have reported that the hypospadias rate stayed the same in New York State between 1992 and 2005. An earlier study also found no increase in California boys between 1984 and 1997. [More] rss.sciam.com |
Advice on Creating a Rooftop Garden Dear EarthTalk: I’m sure there are many good environmental reasons to build a rooftop garden. Can you enlighten? And also I’d like to know how to go about creating one and whether or not some municipalities might offer incentives to do so. -- Linda, via e-mail [More] rss.sciam.com |
On the Web--November 9 In-Depth Report Galileo and the International Year of Astronomy [More] rss.sciam.com |
Climate Numerology: How Much Atmospheric Carbon Dioxide Is Safe? Last December world leaders met in Copenhagen to add more hot air to the climate debate. That is because although the impacts humanity would like to avoid--fire, flood and drought, for starters--are pretty clear, the right strategy to halt global warming is not. Despite decades of effort, scientists do not know what “number”--in terms of temperature or concentrations of greenhouse gases in the atmosphere--constitutes a danger.When it comes to defining the climate’s sensitivity to forcings such as rising atmospheric carbon dioxide levels, “we don’t know much more than we did in 1975,” says climatologist Stephen Schneider of Stanford University, who first defined the term “climate sensitivity” in the 1970s. “What we know is if you add watts per square meter to the system, it’s going to warm up.” [More] rss.sciam.com |