377 results
- Agriculture
Rural ozone can be fed by feed (as in silage)
Livestock operations take a lot of flak for polluting. Researchers are now linking ozone to livestock, at least in one of the nation's most agriculturally intense centers. And here the pollution source is not what comes out the back end of an animal but what’s destined to go in the front.
- Chemistry
Tiny molecules walk the track
Researchers design synthetic “walking” molecules that may one day haul cargo in artificial micromachines.
- Chemistry
The skinny on indoor ozone
Indoor concentrations of ozone tend to be far lower than those outside, largely because much gets destroyed as molecules of the respiratory irritant collide with surfaces and undergo transformative chemical reactions. New research identifies a hitherto ignored surface that apparently plays a major role in quashing indoor ozone: It’s human skin. And while removing ozone from indoor air should be good, what takes its place may not be, data indicate.
- Chemistry
New material sops up radioactive cesium
Isotope catcher could safely store waste from power plants.
- Chemistry
The element tin does what carbon will not
New bonding suggests scientists may need to rethink heavy metal chemistry.
- Chemistry
Pollutants: Up in flames
Forest fires have the potential to release toxic industrial and agricultural pollutants previously trapped on soil. After glomming onto smoke particles, these chemicals can hitch long-distance rides — sometimes across oceans — before they’re grounded and contaminate some new region, scientists report.
- Chemistry
Flowerless plants make fancy amber
A new analysis suggests that ancient seed plants made a version of the fossilized resin credited to more modern relatives
- Materials Science
Breakup doesn’t keep hydrogel down
Scientists create a new material that is strong, soft and self-healing.
- Chemistry
Concerned about BPA: Check your receipts
Some cash register receipts offer the potential for relatively large exposures to an estrogen mimic.
- Chemistry
PCBs: When green paint isn’t ‘green’
It seems we're literally painting the air -- from the Great Lakes to Antarctica -- with persistent pollutants. Including at least one whose safety has never been studied.
- Earth
Toxic playgrounds
No kid should ever play in arsenic. Especially at school. Yet many probably do, according to findings of a study presented today.
- Chemistry
2009 Science News of the Year: Molecules
Tangles of collagen IV chains link at globules via sulfur-nitrogen bonding (illustrated above). Credit: Courtesy of Science/AAAS New bond in the basementBasements house hidden treasures — including a chemical bond never before seen in living things. Scientists have discovered that collagen fibers in the basement membrane — a tough, structural layer of cells that surrounds […]
