Environment
- Environment
Mercury contamination in California to last 10,000 years
Toxic remnants of gold rush will seep into San Francisco area waterways for millennia.
- Environment
Feedback
Readers respond to "Solving soot," trade-offs of horn size for male Soay sheep and the huge galactic explosion story from 50 years ago.
- Agriculture
Fertilizer has staying power
Nitrogen-based fertilizer may remain in the soil for eight decades, complicating efforts to reduce pollution from runoff into rivers.
- Environment
Pregnant women carry fewer traces of flame retardants
Class of toxins linked to IQ deficits dropped drastically in three years, a new study shows.
- Environment
Cattle chemical can return in the night
Steroid to beef up cows breaks down, but can reassemble under the right conditions.
- Environment
Cool Idea
While nations concede a pressing need for attacking carbon dioxide emissions, other pollutants offer quicker paybacks.
- Environment
Grain alcohol in gasoline?
An excerpt from the September 21, 1963, issue of Science News Letter.
- Environment
Atomic ant sand
Robb Hermes asked for sand ants to get samples of Trinitite, a material created in the test blasts of the first atomic bomb.
- Chemistry
High methane in drinking water near fracking sites
Well construction and geology may both play a role in pollution.
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- Environment
Elevated carbon dioxide may impair reasoning
Insufficient ventilation allows exhaled gas to build up indoors, diminishing decision-making abilities.
