Science & Health

Environment
3:56 pm
Tue November 5, 2013

Thanks To Parasites, Moose Are Looking More Like Ghosts

A large bull moose is inspected by a hunter at a weigh station in Maine.
Robert F. Bukaty AP

Originally published on Tue November 5, 2013 5:48 pm

The news for moose is not good across the country's northern tier and in some parts of Canada. A recent and rapid decline of moose populations in many states may be linked to climate change, and to the parasites that benefit from it.

In Minnesota, moose populations have dropped from a high of more than 12,000 two decades ago to fewer than 3,000 now. Moose in some parts of Manitoba have declined by 50 percent and more.

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The Two-Way
1:29 pm
Tue November 5, 2013

Why India's Mars Mission Is So Much Cheaper Than NASA's

The PSLV-C25, with India's Mars orbiter aboard, prior to Tuesday's launch at the Satish Dhawan Space Centre in southern India.
Indian Space Research Organization (ISRO)

Originally published on Tue November 5, 2013 3:33 pm

Former NASA Administrator Daniel Goldin pioneered a "faster, better, cheaper" approach to America's space program, but he would have been hard-pressed to deliver a Mars mission for the bargain-basement price of India's first probe to the red planet, which blasted off Tuesday.

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Space
2:01 am
Tue November 5, 2013

Galaxy Quest: Just How Many Earth-Like Planets Are Out There?

This is an artist's illustration of Kepler-62f, a planet in the "habitable zone" of a star that is slightly smaller and cooler than ours. Kepler-62f is roughly 40 percent larger than Earth.
NASA/JPL-Caltech/T. Pyle

Originally published on Tue November 5, 2013 10:36 am

A team of planet hunters estimates that about 22 percent of the sun-like stars in our galaxy may have planets about the size of Earth that are bathed in similar amounts of sunlight — and potentially habitable.

That's the conclusion of a new analysis of observations taken by NASA's Kepler Space Telescope, which was launched in 2009 to hunt for potentially habitable Earth-like planets around other stars.

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The Two-Way
4:31 pm
Mon November 4, 2013

Scientists Estimate 20 Billion Earth-Like Planets In Our Galaxy

An artist's rendition of Kepler-69c, a super-Earth-size planet in the habitable zone of a star like our sun, located about 2,700 light-years from Earth in the constellation Cygnus.
AP

Originally published on Tue November 12, 2013 12:34 pm

A new study suggests there could be far more Earth-like planets orbiting distant stars than once thought, some of which might even harbor life.

A team of astronomers from the University of California, Berkeley and the University of Hawaii at Manoa, Honolulu, used the Kepler space telescope to survey 42,000 Sun-like stars looking for a telltale dimming caused by an orbiting planet as it crosses between us and the parent star.

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The Salt
4:13 pm
Mon November 4, 2013

How To Levitate A Sandwich: 'Modernist Cuisine' Spills Photo Secrets

Modernist chefs often like to deconstruct dishes. Why shouldn't food photographers do the same?
Courtesy of the Cooking Lab

Originally published on Fri November 8, 2013 10:36 am

Food porn or art? That's for you decide.

But one thing is for certain: The jumbo-sized images in The Photography of Modernist Cuisine are truly awesome.

In one, a ham and cheese sandwich levitates in midair. Then, a Weber grill gets sliced in half lengthwise to expose a pink burger cooking on another page. And blueberries and peas balloon to the size of dinner plates and melons.

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Shots - Health News
4:13 pm
Mon November 4, 2013

Childhood Maltreatment Can Leave Scars In The Brain

Girls are particularly vulnerable to brain changes caused by stress or trauma, researchers say.
Allen Johnson iStockphoto.com

Originally published on Tue November 5, 2013 11:21 am

Maltreatment during childhood can lead to long-term changes in brain circuits that process fear, researchers say. This could help explain why children who suffer abuse are much more likely than others to develop problems like anxiety and depression later on.

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Research News
4:13 pm
Mon November 4, 2013

How'd They Do That? The Story Of A Giant Rock And A Road Of Ice

The Large Stone Carving is the heaviest stone in the Forbidden City in Beijing. It was believed to have weighed more than 300 tons when it was first transported to the site between 1407 and 1420.
DEA/ W. Buss De Agostini/Getty Images

Originally published on Mon November 4, 2013 6:42 pm

Great works of ancient engineering, like the Pyramids or Stonehenge, inspire awe in every beholder. But some onlookers also get inspired to figure out exactly how these structures were made.

Howard Stone, an engineer from Princeton University, had such a moment in Beijing's Forbidden City — a city-within-a-city of palaces and temples built in the 15th and 16th centuries. A carved, 300-ton slab that formed a ramp to one structure particularly caught Stone's eye. "How in the world did it get here?" he wondered.

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The Salt
3:31 pm
Mon November 4, 2013

Why Are Pig Farmers Still Using Growth-Promoting Drugs?

In recent years, pork producers have found ways to keep the animals healthy through improved hygiene.
M. Spencer Green AP

Originally published on Mon November 4, 2013 6:42 pm

It's one of the most controversial practices in agriculture: feeding small amounts of antibiotics to animals in order to make them grow faster.

But what if the drugs don't even work very well?

There's some good evidence that they don't, at least in pigs. They used to deliver a boost in growth, but that effect has disappeared in recent years or declined greatly.

The reason for this is interesting and even paradoxical.

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World
4:07 pm
Sun November 3, 2013

As Mirrors Beam Light To Town, Norwegians Share Patch Of Sun

People gather in the central square of Rjukan, Norway, on Wednesday to bask in the sun reflected by mirrors on a nearby mountainside.
NTB Scanpix/Reuters/Landov

The small town of Rjukan has long had to make do without sunlight during the cold Norwegian winters.

But that changed Wednesday, when the town debuted a system of high-tech mirrors to reflect sunlight from neighboring peaks into the valley below.

Rjukan, originally founded 100 years ago as an industrial outpost for the energy company Norsk Hydro, is nestled between several mountains and does not receive direct sunlight from late September to mid-March — nearly six months out of the year.

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Space
2:09 pm
Sun November 3, 2013

Space Agencies Of The World, Unite: The U.N.'s Asteroid Defense Plan

This mosaic image from NASA's Dawn spacecraft, captured between 2011 to 2012, shows the giant asteroid Vesta. The mountain at the south pole, seen at the bottom of the image, is more than twice the height of Mount Everest.
NASA

The United Nations General Assembly may approve a plan soon for the world's space agencies to defend the Earth against asteroids.

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Shots - Health News
12:34 pm
Fri November 1, 2013

Sorry, Red Sox, Heavy Stubble Beats Beards For Attractiveness

Hey man, that's sensitive: Mike Napoli of the Boston Red Sox pulls teammate Jonny Gomes' beard after hitting a three-run homer in Game 4 of the 2013 World Series in St. Louis.
Jamie Squire Getty Images

Originally published on Mon November 4, 2013 3:02 pm

When Mike Napoli got up to bat in Game 6 of the World Series, my first thought was, "Oh my goodness, that beard is awful." But after the Red Sox's first baseman laid off a few bad pitches, I started liking the hair on his chin.

All that got me thinking about beards.

Sometime during evolution women lost their facial hair. This strong difference between the sexes implies that facial furriness, or the lack thereof, has played a role in how we picked our partners, at least at one point in human history.

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Space
11:26 am
Fri November 1, 2013

Chris Hadfield's Lessons from Life in Orbit

Retired astronaut Chris Hadfield, author of the new book An Astronaut's Guide to Life on Earth, has flown three space missions, including 144 days on the International Space Station. Hadfield talks about life in zero gravity, his one fear while in orbit, and how he went from test pilot to astronaut.

Author Interviews
11:26 am
Fri November 1, 2013

Einstein's Real Breakthrough? Quantum Theory

Transcript

IRA FLATOW, HOST:

This is SCIENCE FRIDAY. I'm Ira Flatow. When you think about Albert Einstein, the words E=MC squared and Theory of Relativity naturally come to mind. But Einstein did not win his Nobel Prize for that work. Instead, he won the prize for figuring out how light interacts with objects and for believing, when almost no one else did, that light and energy are carried as discreet packets called quanta.

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Technology
11:26 am
Fri November 1, 2013

To Learn How Your Camera Works, Try Building One

Digital cameras are ubiquitous today — even $20 cell phones have them built in. But few people actually know how a digital camera works. Shree Nayar, a computer scientist at Columbia University, set out to change that with his Bigshot Do-It-Yourself Digital Camera kit, which gives tinkerers a view of a camera's anatomy.

Environment
11:26 am
Fri November 1, 2013

Hurricane Sandy Recovery, One Year Later

A year after Hurricane Sandy, recovery efforts are still ongoing, and questions remain about how to rebuild and prepare the coastlines for the next storm. A group of experts discusses rebuilding and protective options — from sea walls to "oyster-tecture" — and considers calls for a "managed retreat" from the shore.

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