Πέμπτη 14 Νοεμβρίου 2013

ScienceDaily: Top Environment News

ScienceDaily: Top Environment News


Expert assessment: Ocean acidification may increase 170 percent this century

Posted: 13 Nov 2013 06:38 PM PST

In a major new international report, experts conclude that the acidity of the world's ocean may increase by around 170 percent by the end of the century bringing significant economic losses. People who rely on the ocean's ecosystem services -- often in developing countries -- are especially vulnerable.

Fossil of new big cat species discovered: Oldest ever found

Posted: 13 Nov 2013 03:26 PM PST

Scientists have discovered the oldest big cat fossil ever found -- which fills in a significant gap in the fossil record.

Scorpions use strongest defense mechanisms when under attack

Posted: 13 Nov 2013 03:26 PM PST

Scorpions tend to use their strongest defense mechanisms when they are being attacked.

Queen bee's honesty is the best policy for reproduction signals

Posted: 13 Nov 2013 03:25 PM PST

Queen bees convey honest signals to worker bees about their reproductive status and quality, according to an international team of researchers, who say their findings may help to explain why honey bee populations are declining.

Buried leaves reveal precolonial eastern U.S. forests and guide stream restoration

Posted: 13 Nov 2013 03:25 PM PST

Sediment behind milldams in Pennsylvania preserved leaves deposited just before European contact that provide a glimpse of the ancient forests, according to a team of geoscientists, who note that neither the forests nor the streams were what they are today.

The big fish that got away… (it was let go)

Posted: 13 Nov 2013 03:24 PM PST

It's not every day that fishermen catch the world's largest fish species in their nets, but this is what recently happened in Indonesia's Karimunjawa National Park, according to the Wildlife Conservation Society.

Deletion of any single gene provokes mutations elsewhere in the genome

Posted: 13 Nov 2013 01:25 PM PST

Researchers report that the deletion of any single gene in yeast cells puts pressure on the organism's genome to compensate, leading to a mutation in another gene. Their discovery, which is likely applicable to human genetics because of the way DNA is conserved across species, could have significant consequences for the way genetic analysis is done in cancer and other areas of research.

Nature's glowing slime: Scientists peek into hidden sea worm's light

Posted: 13 Nov 2013 12:26 PM PST

Scientists are unraveling the mechanisms behind a little-known marine worm that produces a dazzling bioluminescent display in the form of puffs of blue light released into seawater. Found around the world in muddy environments, from shallow bays to deeper canyons, the light produced by the "parchment tube worm" is secreted as a slimy bioluminescent mucus.

Warming since 1950s partly caused by El Niño

Posted: 13 Nov 2013 12:25 PM PST

A natural shift to stronger warm El Niño events in the Pacific Ocean might be responsible for a substantial portion of the global warming recorded during the past 50 years, according to new research.

New treatment discovered to cure MRSA infection

Posted: 13 Nov 2013 11:41 AM PST

Recent work promises to overcome one of the leading public health threats of our time. In a groundbreaking study, the team presents a novel approach to treat and eliminate methicillin resistant Staphylococcus aureus, or MRSA, a potent bacterium whose resistance to antibiotics has kept it one step ahead of researchers. That is, until now.

Lignin-feasting microbe holds promise for biofuels

Posted: 13 Nov 2013 11:36 AM PST

Researchers have identified a rain forest microbe that feasts on the lignin in plant leaf litter, making it a potential ally for the cost-effective production of advanced biofuels.

Feral cats avoid urban coyotes, are surprisingly healthy

Posted: 13 Nov 2013 11:36 AM PST

Cats that live outdoors in the city do their darnedest to steer clear of urban coyotes, a new study says. The cats cause less damage to wildlife in urban green spaces, such as city parks and nature preserves, because of that dodging.

Newly discovered protist suggests evolutionary answers, questions

Posted: 13 Nov 2013 10:21 AM PST

From Massachusetts to Mississippi, a unicellular protist is hinting at answers about the evolution of multicellularity while raising a whole new set of questions.

Generation length for mammals: An essential reference point for conservation studies

Posted: 13 Nov 2013 10:01 AM PST

Life history traits are the basic ecological descriptors of a species. These include physical traits, such as body mass and physiological traits, such as reproductive rate. A recent article provides the first comprehensive attempt to complete a database of generation lengths for all extant mammals. This database represents an essential reference point for ecological and conservation-related studies that need pragmatic information on species generation length.

Island biodiversity in danger of total submersion with climate change

Posted: 13 Nov 2013 10:00 AM PST

Island ecosystems constitute the most biodiverse regions in the world, holding a large number of endemic flora and fauna. Islands are also under direct threat of predicted sea level rises, with gloomy prognoses predicting large areas submerged, whole islands sinking and up to 11 percent islands inundated. A new study looks at three scenarios to estimate the risks posed by global change to island ecosystems.

Monkeys 'understand' rules underlying language musicality

Posted: 13 Nov 2013 10:00 AM PST

Many of us have mixed feelings when remembering painful lessons in German or Latin grammar in school. Languages feature a large number of complex rules and patterns: using them correctly makes the difference between something which "sounds good," and something which does not. However, cognitive biologists have shown that sensitivity to very simple structural and melodic patterns does not require much learning, or even being human: South American squirrel monkeys can do it, too.

Natural disasters of the past can help solve future problems

Posted: 13 Nov 2013 07:57 AM PST

Nobody can predict the future, of course -- but we can learn from the past. The past could teach us a lot about how natural disasters influence society at many different levels.

Healing powers of cells

Posted: 13 Nov 2013 07:57 AM PST

How do cells spread to cover and close a wound? A team of researchers publishes new insights into epithelial cell spreading.

Don't hold the anchovies: Study shows Peruvian fish worth more as food than feed

Posted: 13 Nov 2013 06:25 AM PST

The true potential of Peruvian anchovy lies not in fishmeal but as food for people and as part of the ocean food web, according to Canadian and Peruvian researchers.

'Missing heat' discovery prompts new estimate of global warming: Arctic warming fast

Posted: 13 Nov 2013 06:22 AM PST

Scientists say they have found "missing heat" in Earth's climate system, casting doubt on suggestions that global warming has slowed or stopped over the past decade. The new research shows that the Arctic is warming at about eight times the pace of the rest of the planet.

Largest lake in Britain and Ireland has lost three quarters of winter water birds

Posted: 13 Nov 2013 05:01 AM PST

The largest lake in Britain and Ireland, Lough Neagh, has lost more than three quarters of its overwintering water birds.

When sex goes to their heads: Sea slugs have a two-pronged strategy

Posted: 12 Nov 2013 05:04 PM PST

Slugs may ensure mating success with a shot to beloved's forehead, say evolutionary biologists.

Rare African golden cat caught on camera trap

Posted: 12 Nov 2013 09:33 AM PST

New camera trap footage from Uganda's Kibale National Park shows a rarely seen African golden cat.

Δεν υπάρχουν σχόλια:

Δημοσίευση σχολίου