Enn Original News
Birds prefer quality over quantity
September 22, 2016 07:13 AM - Matt Hayes, Cornell University
In a new study that upends the way ornithologists think about a young bird’s diet – but won’t shock parents used to scanning the nutritional profile of their children’s food – Cornell researchers have found that when it comes to what chicks eat, quality trumps quantity.
In recent decades, many aerial insectivores, such as tree swallows, have undergone steep population declines. Cornell researchers have demonstrated for the first time that the fatty acid composition in the tree swallow diet plays a key role in chick health and survival rates, potentially pointing to new ways to protect fragile bird species.
Motivating Eco-Friendly Behaviors Depends on Cultural Values
September 2, 2016 07:13 AM - Association for Psychological Science
The specific cultural values of a country may determine whether concern about environmental issues actually leads individuals to engage in environmentally friendly behaviors, according to the new research published in Psychological Science, a journal of the Association for Psychological Science.
The findings suggest that individual concern is more strongly associated with motivation to act in countries that espouse individualistic values, while social norms may be a stronger motivator in collectivistic societies.
NASA Monitors the 'New Normal' of Sea Ice
August 23, 2016 07:33 AM - Maria-José Viñas and Kate Ramsauer, NASA
This year’s melt season in the Arctic Ocean and surrounding seas started with a bang, with a record low maximum extent in March and relatively rapid ice loss through May. The melt slowed down in June, however, making it highly unlikely that this year’s summertime sea ice minimum extent will set a new record.
Nature and the Nurture of Aerosols
August 15, 2016 07:07 AM - Pacific Northwest National Laboratory
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.
Melting ice sheet could expose frozen Cold War-era hazardous waste
August 9, 2016 07:18 AM - York University
Climate change is threatening to expose hazardous waste at an abandoned camp thought to be buried forever in the Greenland Ice Sheet, new research out of York University has found.
Camp Century, a United States military base built within the Greenland ice sheet in 1959, doubled as a top-secret site for testing the feasibility of deploying nuclear missiles from the Arctic during the Cold War. When the camp was decommissioned in 1967, its infrastructure and waste were abandoned under the assumption they would be entombed forever by perpetual snowfall.
First evidence of sleep in flight
August 4, 2016 07:12 AM - Max Planck Society
For the first time, researchers have discovered that birds can sleep in flight. Together with an international team of colleagues, Niels Rattenborg from the Max Planck Institute for Ornithology in Seewiesen measured the brain activity of frigatebirds and found that they sleep in flight with either one cerebral hemisphere at a time or both hemispheres simultaneously. Despite being able to engage in all types of sleep in flight, the birds slept less than an hour a day, a mere fraction of the time spent sleeping on land. How frigatebirds are able to perform adaptively on such little sleep remains a mystery.
Do eco-friendly wines taste better?
August 3, 2016 07:26 AM - UCLA
t’s time to toast environmentally friendly grapes. A new UCLA study shows that eco-certified wine tastes better — and making the choice even easier, earlier research shows it’s often cheaper, too.
Though consumers remain reluctant to spend more on wine from organic grapes, the new study from UCLA researchers shows that in blind taste-tests professional wine reviewers give eco-certified wines higher ratings than regular wines.
Giant forest fires exterminate spotted owls
August 3, 2016 07:17 AM - University of Wisconsin-Madison
As climate changes and wildfires get larger, hotter and more frequent, how should public lands in the American West be managed to protect endangered creatures that, like the spotted owl, rely on fire-prone old-growth forests?
Could periodic forest thinning and prescribed burns intended to prevent dangerous “megafires” help conserve owls in the long run? Or are those benefits outweighed by their short-term harm to owls? The answer depends in part on just how big and bad the fires are, according to a new study.
In a report published Aug. 1 that may help quiet a long-simmering dispute about the wisdom of using forest thinning and prescribed burns to reduce the “fuel load” and intensity of subsequent fires, a University of Wisconsin—Madison research group has documented an exodus of owls following the fierce, 99,000 acre King Fire in California in 2014.
Antarctic sea ice may be a source of mercury in Southern Ocean fish and birds
August 1, 2016 09:27 PM - University of Melbourne
New research has found methylmercury – a potent neurotoxin – in sea ice in the Southern Ocean.
Published today in the journal Nature Microbiology, the results are the first to show that sea-ice bacteria can change mercury into methylmercury, a more toxic form that can contaminate the marine environment, including fish and birds.
If ingested, methylmercury can travel to the brain, causing developmental and physical problems in foetuses, infants and children.
Low Zika risk for travelers to Olympics in Brazil, study finds
July 26, 2016 07:23 AM - Michael Greenwood, Yale News
The Zika virus poses a negligible health threat to the international community during the summer Olympic Games that begin next month in Rio de Janeiro, Brazil, according to researchers at Yale School of Public Health (YSPH).
In a worst-case scenario, an estimated 3 to 37 of the thousands of athletes, spectators, media, and vendors traveling to Rio for the Olympics will bring the Zika virus back to their home countries, the researchers concluded.