Earth
We summarize the week's scientific breakthroughs every Thursday.
- Earth
Seals’ meals, plastic pieces and all
Bite-size pieces of plastic chipped from wave-battered consumer products work their way up marine food chains, suggests a study of fur seals in Australia.
- Earth
Blame the Sea? Ocean may be melting ice shelf from below
Significant portions of a large Antarctic ice shelf just south of one that suddenly broke apart in February 2002 are rapidly thinning and may suffer a similar, catastrophic demise in less than a century.
- Earth
Flaming Out? Days may be numbered for two fire retardants
The maker of two controversial flame-retardant chemicals has voluntarily initiated negotiations with the federal government to end their production.
- Earth
California acts on plastic additive
Korean engineers have developed a replacement for a plasticizer used in polyvinyl chloride that California has just ruled is a known reproductive toxicant.
- Earth
Chicken Little? Study cites arsenic in poultry
Most chicken eaten in the United States contains 3 to 4 times as much arsenic as is present in other kinds of meat and poultry.
- Earth
Gulf War vets face elevated ALS risk
Two studies suggest that veterans of the 1991 Gulf War are at elevated risk of developing the fatal neurodegenerative condition amyotrophic lateral sclerosis (ALS) compared with other military personnel and with the general population.
- Earth
Flame retardants take a vacation
The lifetime in blood of flame- retarding diphenyl ethers, now-ubiquitous pollutants, ranges from 2 weeks to 2 years, Swedish researchers find.
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- Earth
Smog chemicals found even in rural western plains
Analyses of the atmosphere over the south-central United States show that gases emitted from the region's oil and natural gas industries contribute to air pollution—even over remote Kansas cornfields—that can surpass the noxious mix found in urban areas.
- Earth
Toxic Controversy: Perchlorate found in milk, but risk is debated
Researchers in Texas have detected the chemical perchlorate in milk, crops, and a significant portion of the state's groundwater.
- Earth
When Genes Escape
The focus of the debate over transgenic crops has changed from whether genes will escape to what difference it will make when they do.
- Earth
Scrutinized chemicals linger in atmosphere
The newly determined longevity in the atmosphere of certain perfluorinated chemicals indicates that they may disperse environmental contamination far and wide.
