Lead problems with the water in Flint, Mich., have prompted people across the country to ask whether they or their families have been exposed to the toxic metal in their drinking water, too. When it comes to assessing the risk, it's important to look in the right places.
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La NASA mide los vientos de tormenta tropical Conson
El instrumento de la NASA RapidScat, proporcionó mediciones de las velocidades sostenidas de vientos conforme la tormenta tropical Conson fue rastreada a través del Océano Pacífico noroccidental.
The Colony-Killing Mistake Backyard Beekeepers Are Making
Jonathan Garaas has learned a few things in three seasons of backyard beekeeping: Bees are fascinating. They're complicated. And keeping them alive is not easy.
Every two weeks, the Fargo attorney opens the hives to check the bees and search for varroa mites, pests that suck the bees' blood and can transmit disease. If he sees too many of the pinhead-sized parasites, he applies a chemical treatment.
Nature and the Nurture of Aerosols
You've seen it when flying into major cities the world over: a haze over the city. It is caused by aerosol particles, but scientists don't know all the details of the complex chemistry involved. At Pacific Northwest National Laboratory, Dr. Alla Zelenyuk and her team took on a specific part of that haze: originated from isoprene. After being released by the trees and shrubs, isoprene reacts in the atmosphere and becomes assorted chemicals, including IEPOX (isoprene epoxydiols). The team found that IEPOX is a major player in producing aerosols from isoprene and that particle size, certain coatings, and acidity influence how IEPOX behaves.
NASA's Fermi mission expands its search for dark matter
Dark matter, the mysterious substance that constitutes most of the material universe, remains as elusive as ever. Although experiments on the ground and in space have yet to find a trace of dark matter, the results are helping scientists rule out some of the many theoretical possibilities. Three studies published earlier this year, using six or more years of data from NASA's Fermi Gamma-ray Space Telescope, have broadened the mission's dark matter hunt using some novel approaches.
Threat of wildfires expected to increase as global temperatures rise
The United Nations Office for Disaster Risk Reduction (UNISDR) has warned that wildfires could become more frequent and more destructive as global temperatures rise and drought conditions plague many regions of the world.
“Last year was the hottest year on record and was above average for the number of reported major droughts and heatwaves. This year we are seeing a similar pattern with new temperature records being set on a monthly basis,” UNISDR chief Robert Glasser said yesterday in a news release issued by the Office.