Pollution | Science News

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Pollution

Topic Image Rail

smog over LA

SMOG CITY   Los Angeles, shown here, is one of the smoggiest cities in the United States. That haze of air pollution comes not just from cars, but also from an array of consumer products that emit chemicals into the air.

porpoise with tracker attached

TAG TEAM  Researchers tagged seven porpoises with sensors that were attached via suction cups, which detached harmlessly after about a day.

algal bloom

FEELING GREEN  Freshwater bodies on more than a third of Earth’s land area (excluding Antarctica) are maxed out on phosphorus, which can help create algal blooms such as this one.

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