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The organic properties of some particles, such as those from the burning of agricultural waste, have been found to increase the number of cloud droplets in polluted air, allowing more sunlight to be reflected into space than would occur normally.The phenomenon affects climate locally, and probably regionally, say researchers from the Consilio Nazionale delle Ricerche in Bologna, Italy, and the 痳豆在线 in Seattle.

For nearly a decade, 痳豆在线 atmospheric chemist Robert Charlson has advanced the notion that, in some regions, tiny particles from industrial pollution are actually countering the atmospheric warming effects of greenhouse gases. For nearly a decade, 痳豆在线 atmospheric chemist Robert Charlson has advanced the notion that, in some regions, tiny particles from industrial pollution are actually countering the atmospheric warming effects of greenhouse gases.

Species recovery plans have multiplied quickly since the Endangered Species Act was spawned 25 years ago. But there’s still a question of how well the more than 900 species listed as endangered or threatened are recovering. Now a 痳豆在线 zoologist is spearheading a national effort to review 200 recovery plans in detail.

Recent satellite measurements by 痳豆在线 seismologists indicate the “locked zone” between the Juan de Fuca and North America plates is wider in the Seattle area than previously believed. That means the Puget Sound lowlands are likely to experience significantly greater motion during a subduction-zone earthquake than scientists earlier thought.