Cancer health risk significantly underestimated by EPA's ambient model estimates
...d, "The public health implications of our findings loom large. ASPEN has already shown that for many U.S. census tracts, risk from ambient air toxins exceeds acceptable levels. Now our data indicates that because of significant indoor source contributions, these risks are much worse." Passive air sampling...Extreme climate variance sped extinction of local butterfly populations, researchers say
...wash out their numbers. Environmental fluctuations loom large, and when fluctuations cause an extinction, isolation prevents recolonization. Human population growth can bring urban sprawl and plant invasions that isolate one population "island" from another and create insurmountable barriers to migration ...Taking the pulse of giants: Detecting change and its consequences in western mountain ecosystems
...etrable, and staggeringly large, Western mountains loom like giants on the horizon. But in spite of their awesome qualities, the Cascades, the Sierra Nevada, and the Rockies are all currently experiencing a great deal of stress as a result of more than a century of habitation and resource extraction by h......r skies in the Western hemisphere. The clouds now loom over the East."The same cycle that characterized the industrial areas of North America and Europe in the '70s and '80s is well under way in Asia now, particularly mainland China," Husar points out. "The Asian countries realize something must be done...