Senin, 02 Mei 2016

ScienceDaily: Top Environment News

ScienceDaily: Top Environment News

Screening method uncovers drugs that may combat deadly antibiotic-resistant bacteria

Posted: 29 Apr 2016 10:35 AM PDT

In recent years, hospitals have reported dramatic increases in the number of cases of the highly contagious, difficult-to-treat, and often deadly antibiotic-resistant bacteria carbapenem-resistant Enterobacteriaceae. Now, investigators have developed a promising method of identifying new antimicrobials that target these organisms.

Mechanism discovered for plants to regulate their flowering in a warming world

Posted: 29 Apr 2016 10:34 AM PDT

A new mechanism that enables plants to regulate their flowering in response to raised temperatures has been discovered by researchers. The finding could potentially lead to the development of technology allowing us to control the physiological response of plants and mitigate the impacts of warming temperatures.

Prion-like protein found in plants

Posted: 29 Apr 2016 06:51 AM PDT

Scientists have determined that a plant protein involved in the timing of flowering could in fact be a prion. This is the first time that a possible prion has been identified in plants, and it may play a role in a plant's 'memory' of cold exposure during winter.

Researchers use viral particles to trap intact mammalian protein complexes

Posted: 29 Apr 2016 06:50 AM PDT

Belgian scientists report their development of Virotrap, a viral particle sorting approach for purifying protein complexes under native conditions. This method catches a bait protein together with its associated protein partners in virus-like particles that are budded from human cells. Like this, cell lysis is not needed and protein complexes are preserved during purification.

Goose camp: Tracking troubled birds

Posted: 28 Apr 2016 01:10 PM PDT

A research team is studying the Atlantic brant goose in Canada's Hudson Bay region. The bird's population has been on a moderate decline, and the team is looking to seen if limitations during the summer breeding season have accelerated that trend.

New technique spots active motion in cells

Posted: 28 Apr 2016 12:21 PM PDT

A noninvasive data analysis technique has been developed that can discern whether an object's random motion is actively or thermally driven.

Taste test? Deer preferences seem to be helping non-native invasive plants spread

Posted: 28 Apr 2016 09:25 AM PDT

Selective browsing by white-tailed deer likely is promoting the spread of some invasive plant species in northeastern US forests, as deer avoid eating vegetation they find unpalatable.

Recipes: The secret world of the early modern kitchen

Posted: 27 Apr 2016 02:16 PM PDT

Shakespearean-era recipes offer much more than the history of puddings and pies. They also capture a surprisingly creative and intellectually-rich world of the early modern English housewife, according to a new book.

Bacteria beneficial to plants have spread across California

Posted: 27 Apr 2016 01:53 PM PDT

A strain of beneficial nitrogen-fixing bacteria has spread across California, researchers have discovered, demonstrating that beneficial bacteria can share some of the same features that are characteristic of pathogens. The bacteria, called Bradyrhizobium, form tumor-like nodules on the roots of plants and are able to 'fix' nitrogen by breaking it down and rendering it into forms that plants can easily metabolize.
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Minggu, 01 Mei 2016

ScienceDaily: Top Environment News

ScienceDaily: Top Environment News

Concerns raised with products marketed as 'first finger foods'

Posted: 30 Apr 2016 07:05 AM PDT

New research found many products marketed as 'first finger foods' for babies failed to meet American Academy of Pediatrics recommendations that they be small, soft and easy to swallow.

Aerial spraying to combat mosquitoes linked to increased risk of autism in children

Posted: 30 Apr 2016 07:04 AM PDT

New research suggests that the use of airplanes to spray anti-mosquito pesticides may increase the risk of autism spectrum disorder and developmental delays among children.

Legalization of marijuana in Washington had no effect on teens' access to drug

Posted: 30 Apr 2016 07:02 AM PDT

Despite concerns that legalizing marijuana use for adults would make it easier for adolescents to get ahold of it, a new study in Washington State shows that teens find it no easier now than before the law was passed in 2012.

One in six children hospitalized for lung inflammation positive for marijuana exposure

Posted: 30 Apr 2016 07:02 AM PDT

A new study found that one in six infants and toddlers admitted to a Colorado hospital with coughing, wheezing and other symptoms of bronchiolitis tested positive for marijuana exposure.

Forming fogbows: Study finds limit on evaporation to ice sheets, but that may change

Posted: 29 Apr 2016 04:28 PM PDT

Although the coastal regions of the Greenland Ice Sheet are experiencing rapid melting, a significant portion of the interior of that ice sheet has remained stable -- but a new study suggests that stability may not continue. Researchers found that very little of the snow and ice on the vast interior of the ice sheet is lost to the atmosphere through evaporation because of a strong thermal 'lid' that essentially traps the moisture and returns it to the surface where it refreezes.

Newly discovered baby Titanosaur sheds light on dinosaurs' early lives

Posted: 29 Apr 2016 04:28 PM PDT

Long-necked sauropod dinosaurs include the largest animals ever to walk on land, but they hatched from eggs no bigger than a soccer ball.

What lies beneath West Antarctica?

Posted: 29 Apr 2016 04:28 PM PDT

New research provides the first look into the biogeochemistry, geophysics and geology of Subglacial Lake Whillans, which lies 800 meters (2,600 feet) beneath the West Antarctic Ice Sheet.

The gut microbiomes of infants have an impact on autoimmunity

Posted: 29 Apr 2016 06:50 AM PDT

By looking at the gut microbiomes of infants from three different countries, the team uncovered evidence that not only supports the hygiene hypothesis, but also points to interactions among bacterial species that may account, at least in part, for the spike in immune disorders seen in western societies.

Exposure to particulate air pollutants associated with numerous cancers

Posted: 29 Apr 2016 06:50 AM PDT

Researchers have found that long-term exposure to environmental pollutants was associated with increased risk of mortality for many types of cancer in an elderly Hong Kong population.

Geochemical detectives use lab mimicry to look back in time

Posted: 28 Apr 2016 12:18 PM PDT

New work contains some unexpected findings about iron chemistry under high-pressure conditions, such as those likely found in the Earth's core, where iron predominates and creates our planet's life-shielding magnetic field. The results could shed light on Earth's early days when the core was formed through a process called differentiation -- when the denser materials, like iron, sunk inward toward the center, creating the layered composition the planet has today.

Underwater archaeology looks at atomic relic of the Cold War

Posted: 28 Apr 2016 10:22 AM PDT

New research focuses on a single shipwreck as the lens through which maritime archaeology assesses the advent of the Atomic Age and the Cold War. The wreck is the World War II veteran aircraft carrier USS Independence, which was one of nearly a hundred ships used as targets in the first tests of the atomic bomb at Bikini Atoll in the summer of 1946.

Flightless survivors: Incredible invertebrate diversity in Los Angeles metropolitan area

Posted: 28 Apr 2016 10:22 AM PDT

Flight is one of nature's greatest breakthroughs. It enables escape, dispersion, and exploration. Lacking flight keeps you grounded -- sometimes for a long time even from evolution's perspective. The Madrona Marsh Preserve is a small nature preserve in one of the world's largest metropolitan areas, which has withstood decades of farming, oil exploration, and development pressures. Surprisingly, a treasure of flightless animals survived.

Influence of religion and predestination on evolution and scientific thinking

Posted: 28 Apr 2016 10:22 AM PDT

Seen as antithetical to one another, evolution and religion can hardly fit in a scientific discourse simultaneously. One expert has observed the influences a few major religions have had on evolutionists and their scientific thinking. Inspired by the lack of pigmentation and/or eyes in some cave organisms, he focuses on biospeleology to challenge the notions of predetermination and linearity.

Ice loss accelerating in Greenland's coastal glaciers

Posted: 28 Apr 2016 10:22 AM PDT

Surface meltwater draining through and underneath Greenland's tidewater glaciers is accelerating their loss of ice mass, according to a new study that sheds light on the relationship between meltwater and subglacial discharge.

Amazon rainforest responds quickly to extreme climate events

Posted: 28 Apr 2016 10:22 AM PDT

The carbon balance in the Amazon can change quickly in response to heat and drought conditions.

Climate change puts most-threatened African antelopes in 'double jeopardy'

Posted: 28 Apr 2016 10:19 AM PDT

Researchers say that climate change will cause a disproportionate decline in African antelopes with the smallest geographic ranges, placing the most-threatened taxa in 'double jeopardy.' The findings are the first to suggest that animals already living in the most-restricted areas will be hardest hit as the climate shifts in the coming decades.

Peacock tail feathers shake at resonance and hold eyespots still during courtship displays

Posted: 27 Apr 2016 01:41 PM PDT

As male peacocks shake their long feathers in courtship, the iridescent eyespots remain nearly stationary and captivate females, according a new study.

Engineers produce biodiesel from microalgae in three hours

Posted: 27 Apr 2016 12:12 PM PDT

By using native cells from the Lake of Texcoco, researchers reduce biofuel production time.
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