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Pollution

Scientists are developing a "living sensor" that eats hydrocarbons to monitor the country's extensive network of petroleum pipelines.

Tracy Staedter, Contributor

Scientists discuss the risks and feasibility of using solar geoengineering to cool us off.

Yuen Yiu, Staff Writer

Fish expend energy metabolizing drugs and personal products in fresh water.

Joel Shurkin, Contributor

Green plant could help clean up heavy metal contamination at industrial sites.

Brian Owens, Contributor

The solution flowing through the Keystone pipeline isn't just crude oil. Scientists are now learning what that means for spills.

Brian Owens, Contributor

Nitrogen isotopes show how nutrients leach out of septic tanks and into pond ecosystems.

Nala Rogers, Staff Writer

Mountains and forested slopes surround cloudy blue water of a reservoir

People who eat fish from glacial meltwater may be at risk from persistent organic pollutants produced in the 20th century.

Nala Rogers, Staff Writer

Morning light over the city skyline of Copenhagen with a power plant in the background.

Sediment core from a Copenhagen lake tells the story of the Industrial Revolution.

Nala Rogers, Staff Writer

Nicotine in the air and clothing permeates skin and enters the bloodstream at levels equivalent to inhalation of secondhand smoke.

Kimberly Hickok, Contributor

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