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Earth

Models Map City Residents’ Aversion to Pollution

New theoretical models help urban planners understand how residents think about clean air.

Jennifer Leman, Contributor

Space

Scientists Test Tiny Labels for Sorting Out Space Debris

Numerous bits of orbiting debris threaten spacecraft, so two teams propose tracking them with unique license plate-like transponders.

Ramin Skibba, Contributor

Earth

Toxic Mix: Regulating Chemicals Individually May Miss Danger

Mixtures of chemical pollutants may harm people and wildlife, even when each chemical is below its regulatory threshold.

Nala Rogers, Staff Writer

Earth

Summer Dead Zones in the Chesapeake Break Up Earlier

Low oxygen areas are disappearing almost a month earlier than they did 30 years ago.

Joel Shurkin, Contributor

Earth

Study of Treated Wastewater Detects Chemicals from Drug Production Facilities

Nationwide study shows how manufacturing facilities can increase levels of medical compounds in waterways.

Anna Katrina Hunter, Contributor

Earth

BRIEF: Tourism Responsible for 8 Percent of All Greenhouse Gas Emissions

Researchers found that efforts to curtail tourism-related emissions have been outpaced by the industry's growth.

Yuen Yiu, Staff Writer

Earth

Can Green Infrastructure Save America's Capital from Overflowing Sewage?

Ambitious plan aims to keep waste out of rivers without massive new pipes.

Gabriel Popkin, Contributor

Technology

Bacteria-Based Sensor Could Detect Oil and Gas Leaks

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

Tracy Staedter, Contributor

Earth

BRIEF: Can We Engineer Our Way Out of Global Warming?

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

Yuen Yiu, Staff Writer

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