The Colony-Killing Mistake Backyard Beekeepers Are Making
August 12, 2016 03:31 PM - Dan Gunderson via National Public Radio
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.
NASA's Fermi mission expands its search for dark matter
August 12, 2016 03:19 PM - Nasa/Goddard Space Flight Center via EurekAlert!
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.
July Electric Car Sales in China Rose by 188 Percent Over Last Year
August 12, 2016 01:59 PM - Yale Environment 360
Chinese consumers bought 34,000 new electric cars in July, a 188 percent jump over the same period last year, according to CleanTechnica, an energy and technology news organization. The monthly total puts China on track to sell 400,000 electrical vehicles in 2016, accounting for 1.5 percent of the total auto sales market — larger than annual EV sales in Europe, or the U.S., Canada, and Mexico combined.
Let's roll: Material for polymer solar cells may lend itself to large-area processing
August 12, 2016 01:48 PM - National Institute of Standards and Technology (NIST) via EurekAlert!
For all the promise they have shown in the lab, polymer solar cells still need to "get on a roll" like the ones employed in printing newspapers so that large sheets of acceptably efficient photovoltaic devices can be manufactured continuously and economically. Polymer solar cells offer advantages over their traditional silicon-based counterparts in numerous ways, including lower cost, potentially smaller carbon footprint and a greater variety of uses.
Global warming's next surprise: Saltier beaches
August 12, 2016 10:41 AM - New Jersey Institute of Technology via ScienceDaily
Batches of sand from a beach on the Delaware Bay are yielding insights into the powerful impact of temperature rise and evaporation along the shore that are in turn challenging long-held assumptions about what causes beach salinity to fluctuate in coastal zones that support a rich network of sea creatures and plants.
The findings have implications for the migration and survival of invertebrates such as mussels and crabs as global warming drives temperatures higher.
A first major study of the effects of evaporation on the flow of subsurface water and salinity, or salt content, in the beach intertidal zone -- the section of the beach between the low and high tide marks -- is being published today in Scientific Reports, an online affiliate of Nature.
Where Lead Lurks And Why Even Small Amounts Matter
August 12, 2016 10:29 AM - Jessica Pupovac via National Public Radio
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.
Even when municipal water systems' lead levels are considered perfectly fine by federal standards, the metal can leach into tap water from lead plumbing.
Greenland shark revealed to have longest life expectancy of all vertebrates
August 12, 2016 09:10 AM - University of Oxford
An international team of scientists led by the University of Copenhagen and including the University of Oxford has found that the Greenland shark has a life expectancy of at least 272 years. This discovery shows it is the longest living vertebrate known to science, exceeding even bowhead whales, turtles and tortoises. The findings are published in latest issue of the journal, Science.
NASA measures winds of Tropical Storm Conson
August 11, 2016 04:43 PM - NASA/Goddard Space Flight Center via EurekAlert!
NASA's RapidScat instrument provided measurements of sustained wind speeds as Tropical Storm Conson continued tracking north through the northwestern Pacific Ocean.
When RapidScat passed over Conson on Aug. 10, it was near peak intensity. RapidScat measured maximum sustained winds around the center of circulation as fast as 49 mph (22 meters per second/79 kph) on Aug. 10. The RapidScat instrument that flies aboard the International Space Station measures Earth's ocean surface wind speed and direction over open waters.
Feds Say California's Endangered Channel Islands Foxes Are Recovered
August 11, 2016 03:48 PM - Center for Biological Diversity
The U.S. Fish and Wildlife Service today announced the successful recovery of three out of four unique subspecies ofisland fox on San Miguel, Santa Rosa and Santa Cruz islands, removing them from the endangered species list. The agency also upgraded the protection status of the Santa Catalina Island fox — the fourth subspecies — from “endangered” to “threatened” to reflect its status improvement.
"Because they evolved separately on the islands for 16,000 years, these adorable little foxes are some of the only carnivores endemic to California,” said Jeff Miller with the Center. “They were on the brink of extinction just 12 years ago when they were protected under the Endangered Species Act. Now, thanks to successful reintroduction and recovery efforts, numbers of foxes are way up and threats have been reduced."
Discovery of sunlight-driven organic chemistry on water surfaces
August 11, 2016 03:41 PM - American Association for The Advancement of Science via EurekAlert!
Fatty acids found on the surface of water droplets react with sunlight to form organic molecules, a new study reports, essentially uncovering a previously unknown form of photolysis.
The results could affect models that account for aerosol particles, including models related to climate. Conventional wisdom holds that carboxylic acids and saturated fatty acids, which are abundant throughout the environment, only react with hydroxyl radicals and are not affected by sunlight.