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Abbey B

New stem cell approach for blindness successful in mice - 0 views

www.sciencedaily.com/...130107160413.htm

Current Event

shared by Abbey B on 08 Jan 13 - No Cached
  • retinitis pigmentosa, a condition in which the light-sensing cells in the retina gradually die leading to progressive blindness.
  • The study was led by Professor Robert MacLaren
  • The researchers say the approach has relevance for treating patients with
  • ...4 more annotations...
  • in the Nuffield Department of Clinical Neurosciences at the University of Oxford
  • Jan. 7, 2013
  • 'The ability to reconstruct the entire light sensitive layer of the retina using cell transplantation is the ultimate goal of the stem cell treatments for blindness we are all working towards
  • cells transplanted into the eye had re-formed a full light-detecting layer on the retina and the mice could see.
Rachel K.

Scientists mimic fireflies to make brighter LEDs: New bio-inspired coating that increas... - 0 views

www.sciencedaily.com/...130108112453.htm

shared by Rachel K. on 09 Jan 13 - No Cached
  • Researchers from Belgium, France, and Canada studied the internal structure of firefly lanterns,
  • The scientists identified an unexpected pattern of jagged scales that enhanced the lanterns' glow, and applied that knowledge to LED design to create an LED overlayer that mimicked the natural structure.
  • to help humans light up the night while using less energy.
Jinle Z

At Least 17 Billion Earth-Size Alien Planets Inhabit Milky Way | LiveScience - 0 views

www.livescience.com/size-alien-planets-aas221.html

Current Event

shared by Jinle Z on 08 Jan 13 - No Cached
  • The Milky Way
  • (Jan. 7
  • 17 percent of stars have a planet 0.8 to 1.25 times the size of Earth in tight orbits
  • ...8 more annotations...
  • 25 percent of stars have a so-called "super-Earth" (worlds 1.25 to 2 times as big as our own)
  • Only 5 percent of stars harbor a gas giant with an orbital period of 400 days or less, researchers said.
  • Kepler detects alien worlds by noting the telltale dips in brightness caused when planets cross the face of — or transit — their parent stars from the instrument's perspective.
  • minimum of 17 billion small, rocky alien worlds, or an Earth-size planet around one of every six stars.
  • Kepler
  • Planets
  • Harvard-Smithsonian Center for Astrophysics (CfA
  • The Astrophysical Journal.
Dinah M.

How Fish Evolved to Climb Waterfalls With Their Mouths - 1 views

news.nationalgeographic.com/...eird-animals-science-evolution

shared by Dinah M. on 07 Jan 13 - No Cached
  • How Fish Evolved to Climb Waterfalls With Their Mouths
  • uses suckers in its mouth and belly to move up steep cliffs in its rugged Hawaiian habitat.
  • Because its freshwater habitat is easily disturbed—by a big storm, for instance—the fish often crawl up waterfalls to return upstream.
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  • fish uses the same movements to climb as it does to eat algae.
  • The Nopili rock-climbing goby has two suckers for climbing.
  • This suggests that, at some point in its evolution, the Nopili rock-climbing goby repurposed one behavior for another
  • There the scientists filmed them feeding on algae-covered glass and—stimulated by falling water—climbing.
  • the team concluded that the fish uses the same overall movements
  • Though it's still unknown which behavior came first, the end result is a perfectly adapted fish
  • Dinah M. on 07 Jan 13
     
    Current Events
Esther M

Rarest whale seen at last in New Zealand - 0 views

www.macroevolution.net/mesoplodon-traversii.html

whale new zealand

shared by Esther M on 09 Jan 13 - No Cached
  • An exceedingly rare spade-toothed whale washed up on a New Zealand shore.
  • A whale almost unknown to science has been seen alive for the first time after two individuals — a mother and her male calf — were stranded and died on a New Zealand beach.
  • Nov. 7, 2012 —
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  • The two whales were discovered in December 2010, when they live-stranded and subsequently died on Opape Beach, New Zealand. The New Zealand Department of Conservation was called to the scene, where they photographed the animals and collected measurements and tissue samples.
  • which is done routinely as part of a 20-year program to collect data on the beaked whales found in New Zealand waters.
  • Their true identity came to light only following DNA analysis,
  • "Up until now, all we have known about the spade-toothed beaked whale was from three partial skulls collected from New Zealand and Chile over a 140-year period. It is remarkable that we know almost nothing about such a large mammal."
Srinivas P

How to stop a speeding bullet | Science News for Kids - 0 views

www.sciencenewsforkids.org/...how-to-stop-a-speeding-bullet

shared by Srinivas P on 07 Jan 13 - No Cached
  • A bullet fired into a disk of polyurethane — a type of plastic — may not burst out the other side.
  • Rice research scientist Jae-Hwang Lee designed a modified version of the plastic to show what’s happening inside the material when it stops a bullet.
  • “There may be applications for anything that is impacted at high speeds — body armor, satellites — anything that you don’t want destroyed,”
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  • Liquid polyurethane is a polymer.
  • First the layers pressed together, as you might expect. Instead of breaking, however, they seemed to melt and mix like liquids. Then, a millionth of a second later, they were solid again — and the bead was locked inside.
Sari H

The teenage brain | Science News for Kids - 0 views

www.sciencenewsforkids.org/...the-teenage-brain

current event

shared by Sari H on 08 Jan 13 - No Cached
  • what makes the teenager’s brain so complex?
  • By peering into the brains of teenagers, scientists who study brain development have  begun finding answers.
  • October 17, 2012
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  • Eveline Crone
  • Netherlands
  • Teenagers must act on an endless parade of choices.
zach m

Mars meteorite 'Black Beauty' contains most water of any found on Earth, say scientists... - 0 views

www.guardian.co.uk/...s-meteor-water-sahara-analysis

shared by zach m on 08 Jan 13 - No Cached
  • a coal-coloured rock from Mars that landed in the Sahara desert.
  • A year-long analysis revealed it is quite different from other Martian meteorites: not only is it older than most, it also contains more water.
  • The baseball-size meteorite, estimated to be 2bn years old, is strikingly similar to the volcanic rocks examined by the Nasa rovers Spirit and Opportunity on the Martian surface.
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  • Carl Agee, director of the Institute of Meteoritics and curator at the University of New Mexico who led the study
  • About 65 Martian rocks have been recovered on Earth, mostly in Antarctica or the Sahara. The oldest dates back 4.5bn years to a time when Mars was warmer and wetter. About half a dozen Martian meteorites are 1.3bn years old and the rest are 600m years or younger.
  • zach m on 08 Jan 13
     
    this page shows a discovery that a mars rock has more water than any rock on earth.
ben c

Saving Nemo? | TIME For Kids - 0 views

www.timeforkids.com/...48266

science event marine

shared by ben c on 09 Jan 13 - No Cached
  • orange clown fish
Raya H

Science of Fracking | Focus Magazine - 0 views

sciencefocus.com/...science-fracking

science

shared by Raya H on 09 Jan 13 - No Cached
  • Or should we fear it as a potentially lethal eco-nightmare?
  • The process is called hydraulic fracturing, or ‘fracking’, and involves pumping a mixture of pressurised water and chemicals into the well, creating tiny fissures in the shale that allow the gas within it to percolate out
  • After a few months, the fracking is complete and the gas starts flowing up the well. The engineers can then move on, leaving a small collection site behind
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  •  40,000 new wells are drilled each year, around 8 to 10 go wrong
  • Climate change experts warn that shale gas is still just a fossil fuel, and thus a source of carbon dioxide – the prime driver of global warming. Environmentalists have also raised concerns about the impact of extracting the gas. They point to incidents of drinking water allegedly becoming contaminated with the chemicals used to extract the gas, and even shale gas itself, leading to tap water becoming flammable. Such fears have already prompted the French government to impose a temporary ban on shale gas extraction.
  • Shale gas could solve the fuel crisis.
  • blamed in 2011 for a couple minor earthquakes in the UK
  • Raya H on 09 Jan 13
     
    Science of fracking
Lilana Bosler

Kraftwurx 3D Printers | LiveScience - 0 views

www.livescience.com/043-3d-printing-kraftwurx.html

shared by Lilana Bosler on 07 Jan 13 - No Cached
  • Lilana Bosler on 07 Jan 13
     
    I thought this was kind of cool.
Bryce H

Twinkle, twinkle oldest stars | Science News for Kids - 0 views

www.sciencenewsforkids.org/...twinkle-twinkle-oldest-stars

stars science news kids

shared by Bryce H on 08 Jan 13 - No Cached
  • Call it the “cosmic fog.” Or the “extragalactic background light.” Astronomers use these names to describe the light that has left every star and now lingers in the universe, including light from stars that have burned out. Studying this background light can be tricky because objects that produce or reflect light — stars, galaxies, dust, bright stuff hurled through space by a black hole — can get in the way. But, astronomers have just determined how super-bright galaxies can be used to detect the faint glow of the cosmic fog.
Reine E

Marine Biome - 0 views

ths.sps.lane.edu/...marine5.html

Biomes marine Biome

shared by Reine E on 17 Nov 12 - No Cached
  • Reine E on 17 Nov 12
     
    This is a great Website to check out!
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