Kamis, 27 Oktober 2016

ScienceDaily: Top Environment News

ScienceDaily: Top Environment News

A songbird's travelogue

Posted: 26 Oct 2016 11:43 AM PDT

Biologists recently used light-weight geolocation technology to follow a species of songbird on its 10,000-kilometer migration from the Middle East to sub-Saharan Africa.

Upper Paleolithic humans may have hunted cave lions for their pelts

Posted: 26 Oct 2016 11:21 AM PDT

Upper Paleolithic humans may have hunted cave lions for their pelts, perhaps contributing to their extinction, according to a new study.

New immunotherapy technique holds promise for curing food allergies

Posted: 26 Oct 2016 10:32 AM PDT

A new immunotherapy technique has been developed that nearly eliminates the allergic response to peanut and egg white proteins in food-allergic mice, reducing the anaphylactic response by up to 90 per cent with only one treatment.

Mulberry extract activates brown fat, shows promise as obesity treatment

Posted: 26 Oct 2016 07:51 AM PDT

Good news for those who want to activate their brown fat (or BAT, brown adipose tissue) without having to be cold: New research suggests that a natural compound in mulberries, called "rutin," can activate the BAT in our bodies to increase metabolism and facilitate weight loss.

Entire Himalayan arc can produce large earthquakes

Posted: 26 Oct 2016 07:48 AM PDT

The main fault at the foot of the Himalayan mountains can likely generate destructive, major earthquakes along its entire 2,400-kilometer (1,500-mile) length, a new study finds. Combining historical documents with new geologic data, the study shows the previously unstudied portion of the fault in the country Bhutan is capable of producing a large earthquake and did so in 1714.

The buzz about edible bugs: Can they replace beef?

Posted: 26 Oct 2016 07:48 AM PDT

The idea of eating bugs has created a buzz lately in both foodie and international development circles as a more sustainable alternative to consuming meat and fish. Now a report examines how the nutrients -- particularly iron -- provided by grasshoppers, crickets and other insects really measures up to beef. It finds that insects could indeed fill that dietary need.

Arctic found to play unexpectedly large role in removing nitrogen

Posted: 26 Oct 2016 07:45 AM PDT

Areas of the Arctic play a larger role than previously thought in the global nitrogen cycle—the process responsible for keeping a critical element necessary for life flowing between the atmosphere, the land and oceans.

Researchers invent 'perfect' soap molecule that is better for the environment, cleans in all conditions

Posted: 26 Oct 2016 06:18 AM PDT

A new soap molecule has been invented by scientists. The molecule is made from renewable sources that could dramatically reduce the number of chemicals in cleaning products and their impact on the environment.

Indirect effects of rising carbon dioxide levels on ecosystems more important than previously thought

Posted: 26 Oct 2016 05:16 AM PDT

The indirect effects of rising atmospheric carbon dioxide (CO2) levels, such as changes in soil moisture and plant structure, can have a bigger impact on ecosystems than previously thought Understanding the importance of these indirect effects, in comparison to the direct effects, will improve our understanding of how ecosystems respond to climate change.

Extreme cold winters fuelled by jet stream and climate change

Posted: 26 Oct 2016 05:15 AM PDT

Scientists agree for first time that climate change may be intensifying the effects of the jet stream, causing extreme cold weather in the UK and US. Their study could improve long-term forecasting of winter weather in most populous parts of the world, offering more accurate forecasting to help communities, businesses and economies prepare for severe weather and make life and cost-saving decisions.

First-time reconstruction of infectious bat influenza viruses

Posted: 26 Oct 2016 05:15 AM PDT

All known Influenza A viruses originate from aquatic birds that serve as virus reservoirs in nature. Avian viruses can cause severe disease and may lead to devastating pandemics when introduced into the human population. Therefore, a world-wide surveillance program has been set up to monitor influenza virus activity in birds. Surprisingly, bats were recently identified as a potential new source of influenza viruses.

Why does our planet experience an ice age every 100,000 years?

Posted: 26 Oct 2016 05:15 AM PDT

Experts have offered up an explanation as to why our planet began to move in and out of ice ages every 100,000 years.

Space travel affects spine of astronauts, NASA study shows

Posted: 25 Oct 2016 10:59 AM PDT

How does space travel affect the spine? Astronauts on long missions in space have atrophy of the muscles supporting the spine—which don't return to normal even several weeks after their return to Earth, reports a study.

Improved water splitting advances renewable energy conversion

Posted: 25 Oct 2016 09:57 AM PDT

A way to more efficiently create hydrogen from water has been discovered by scientists, representing an important step in making renewable energy production and storage viable.

First time-lapse footage of cell activity during limb regeneration

Posted: 25 Oct 2016 08:49 AM PDT

Researchers have, for the first time, recorded how cells of the epidermis behave during the regrowth of adult limbs after amputation. The scientists carried out continuous live imaging of a regenerating leg in the crustacean Parhyale hawaiensis, a close relative of the common sand hopper.

Wildfire management vs. fire suppression benefits forest and watershed

Posted: 24 Oct 2016 02:18 PM PDT

An unprecedented 40-year experiment in a 40,000-acre valley of Yosemite National Park strongly supports the idea that managing fire, rather than suppressing it, makes wilderness areas more resilient to fire, with the added benefit of increased water availability and resistance to drought.

Urbanization: The historical cause of low oxygen conditions in European lakes

Posted: 24 Oct 2016 02:16 PM PDT

A new study shows that hypoxia in European lakes started in 1850, becoming more widespread after 1900, long before the use of chemical fertilizers and climate change. A research team has identified urban expansion as the reason for the low amounts of bioavailable oxygen in numerous European lakes in past centuries.

Psychological science explores the minds of dogs

Posted: 24 Oct 2016 02:15 PM PDT

Dogs are one of the most common household pets in the world, so it's curious that we know relatively little about their cognitive abilities when we know so much about the abilities of other animals, from primates to cetaceans. Over the last couple decades, researchers have been aiming to bridge this gap in scientific knowledge, investigating how our canine companions behave and what they know and why. An entire special issue of a journal is this month dedicated to exploring all that psychological scientists have learned about dog behavior and cognition in recent years.

Predicting climate impacts on ecosystems will require scientists to widen the lens

Posted: 24 Oct 2016 08:14 AM PDT

Scholars are making the case that overly simplistic studies on the climate impacts on ecosystems avoid the inherent complexity and interconnectedness of natural systems — and thus yield erroneous climate predictions.
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