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Solving the Mystery of River Formation - ScienceNOW

Solving the Mystery of River Formation - ScienceNOW | Science&Nature | Scoop.it
When rain hits a tilted surface, like the side of a mountain or a hill, it tends to flow toward existing depressions. The flow of water erodes the rock or soil, widening and deepening the depressions. Called incision, the process is competitive and even somewhat cannibalistic. As individual rills grow from incision, they capture smaller neighbors, forming tributaries. One would expect incision to spread indefinitely if unchecked, but a process called soil creep smoothes over the land, filling up the cracks with a slow, yet steady, drift of soil.
Scientists have known for more than 100 years that these processes shape rivers, but they hadn't been able to quantify their relative importance, or figure out how they work together to create river basins that are finely branched in some landscapes but not others, says Taylor Perron, a geomorphologist at the Massachusetts Institute of Technology in Cambridge and lead author of the new study. "We saw the form, but didn't understand the mechanism that leads to the development of this branching shape."...
The new mathematical principle, reported today in Nature, will allow scientists to better evaluate the underlying forces at work in a river system even if they can't take on-the-ground measurements, Perron says.
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Equipped with his five senses, man explores the universe around him and calls the adventure Science.  ~Edwin Powell Hubble
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Hubble Observes One-of-a-Kind Star Nicknamed ‘Nasty’

Hubble Observes One-of-a-Kind Star Nicknamed ‘Nasty’ | Science&Nature | Scoop.it
Astronomers using NASA’s Hubble Space Telescope have uncovered surprising new clues about a hefty, rapidly aging star whose behavior has never been seen before in our Milky Way galaxy. In fact, the star is so weird that astronomers have nicknamed it “Nasty 1,” a play on its catalog name of NaSt1. The star may represent a brief transitory stage in the evolution of extremely massive stars. First discovered several decades ago, Nasty 1 was identified as a Wolf-Rayet star, a rapidly evolving star t
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Should I Wash My Dishes Before Putting Them In The Dishwasher?

Should I Wash My Dishes Before Putting Them In The Dishwasher? | Science&Nature | Scoop.it
As an anthropologist, I find the interface between technology and the larger culture in which it is embedded fascinating. You all know the old story of the family cook who habitually cuts the ends off the roast before slipping it in the oven. One day her child, hoping some day to be the family cook,…
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Geochemical process on Saturn's moon linked to life's origin

Geochemical process on Saturn's moon linked to life's origin | Science&Nature | Scoop.it
New work has revealed the pH of water spewing from a geyser-like plume on Saturn's moon Enceladus. Their findings are an important step toward determining whether life could exist, or could have previously existed, on the sixth planet's sixth-largest moon.
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Anaerobic co-digestion of farm-based manure & food waste, are there benefits vs. landfilling?

Anaerobic co-digestion of farm-based manure & food waste, are there benefits vs. landfilling? | Science&Nature | Scoop.it
Based on a comprehensive life cycle analysis comparing the environmental impacts and economic outcomes for managing manure and food waste produced on a dairy farm, researchers found that anaerobic co-digestion of the waste products had substantial cost, energy, and environmental benefits compared to digestion of manure but disposal of food waste in a landfill. A detailed discussion of the potential for bioenergy production, increased profitability, and reductions in global warming and smog is pr
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The Bird Family Tree Gets a Makeover

The Bird Family Tree Gets a Makeover | Science&Nature | Scoop.it
In the most thorough genomic investigation to date, some birds perch on new branches
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Ferns Get It On After 60 Million Years Apart | The Artful Amoeba, Scientific American Blog Network

Ferns Get It On After 60 Million Years Apart | The Artful Amoeba, Scientific American Blog Network | Science&Nature | Scoop.it
An unassuming little fern has left scientists scratching their heads at the feat of reproductive hijinks it apparently represents.

The fern, xCystocarpium roskamianum (the prefix 'x' indicates ...
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The science of why stepping on Legos makes you want to die - Quartz

The science of why stepping on Legos makes you want to die - Quartz | Science&Nature | Scoop.it
And why it's more painful for you than for your kid.
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Famous Paintings Can Reveal Visual Disorders

Famous Paintings Can Reveal Visual Disorders | Science&Nature | Scoop.it
Neural pathologies have shaped great art throughout history -- Read more on ScientificAmerican.com
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Anthropocene: The human age

Anthropocene: The human age | Science&Nature | Scoop.it
This week in Nature, two researchers propose that a potential marker for the start of the Anthropocene could be a noticeable drop in atmospheric CO2 concentrations between 1570 and 1620, which is recorded in ice cores (see page 171). They link this change to the deaths of some 50 million indigenous people in the Americas, triggered by the arrival of Europeans. In the aftermath, forests took over 65 million hectares of abandoned agricultural fields — a surge of regrowth that reduced global CO2.
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Don’t edit the human germ line

Don’t edit the human germ line | Science&Nature | Scoop.it
Heritable human genetic modifications pose serious risks, and the therapeutic benefits are tenuous, warn Edward Lanphier, Fyodor Urnov and colleagues.
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Genetic Memory: How We Know Things We Never Learned - Scientific American

I met my first savant 52 years ago and have been intrigued with that remarkable condition ever since. One of the most striking and consistent things in the many savants I have seen is that that they clearly know things they never learned.
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Tropical paradise inspires virtual ecology lab

Tropical paradise inspires virtual ecology lab | Science&Nature | Scoop.it
Digital version of Moorea will provide a way to experiment with an entire ecosystem.
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Multitude of Microscopic Wonders Discovered in the World's Oceans [Slide Show]

Multitude of Microscopic Wonders Discovered in the World's Oceans [Slide Show] | Science&Nature | Scoop.it
The four-year study took thousands of samples at hundreds of sites
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Sea Level Rise Speeds Up

Sea Level Rise Speeds Up | Science&Nature | Scoop.it
Total sea level rise is lower than previous estimates but the rates are accelerating -- Read more on ScientificAmerican.com
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Proba-V maps world air traffic from space

Proba-V maps world air traffic from space | Science&Nature | Scoop.it
As ESA’s Proba-V works quietly on its main task of monitoring vegetation growth across Earth, the minisatellite is also picking up something from a little higher: signals from thousands of aircraft.
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Did neurons evolve more than once on Earth? - life - 10 April 2015 - New Scientist

Did neurons evolve more than once on Earth? - life - 10 April 2015 - New Scientist | Science&Nature | Scoop.it
Simple, translucent comb jellies have unique neuronal chemistry – and the discovery has scientists arguing over whether or not neurons evolved twice
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X-ray vision: how did extinct marine creatures live? - RUBIN Science Magazine - Ruhr-Universität-Bochum

X-ray vision: how did extinct marine creatures live? - RUBIN Science Magazine - Ruhr-Universität-Bochum | Science&Nature | Scoop.it
Ruhr-Universität Bochum, Menschlich - Weltoffen - Leistungsstark
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The Science Of Why You Should Spend Your Money On Experiences, Not Things

The Science Of Why You Should Spend Your Money On Experiences, Not Things | Science&Nature | Scoop.it
You don't have infinite money. Spend it on stuff that research says makes you happy.
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For The Love Of Pork: Antibiotic Use On Farms Skyrockets Worldwide

For The Love Of Pork: Antibiotic Use On Farms Skyrockets Worldwide | Science&Nature | Scoop.it
For the first time, scientists have estimated how much antibiotics pigs, chickens and cows consume globally — and how fast consumption is growing. Which country uses the most drugs on farms?
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Researchers may have solved origin-of-life conundrum

Researchers may have solved origin-of-life conundrum | Science&Nature | Scoop.it
Study explains how three essential molecules could have formed simultaneously
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Scientists sound alarm over DNA editing of human embryos

Scientists sound alarm over DNA editing of human embryos | Science&Nature | Scoop.it
Experts call for halt in research to work out safety and ethics issues.
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Science of love: It really is all in the mind, say experts

Science of love: It really is all in the mind, say experts | Science&Nature | Scoop.it
What is this thing called love? Cole Porter wasn’t the first to ask. From mystified poets to angst-ridden teens, the question of what exactly love is has troubled us since long before the master songwriter put pen to paper.
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The Future of Rare Earth Elements - Blog About Infographics and Data Visualization - Cool Infographics

The Future of Rare Earth Elements - Blog About Infographics and Data Visualization - Cool Infographics | Science&Nature | Scoop.it
Rare Earth Elements make up a large portion of our high tech equipment and the demand for the e...
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