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How to 'cool down' sunlight

Breakthrough technology that separates the heat of sunlight from the light will help to improve solar cell efficiency.



  • Research & Innovations

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What do all those food seals mean?

Research shows that many people purchase food with a sustainable seal without understanding what the seal means.




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How does an oatmeal brand reinvent itself for a new generation?

Flahavan's Irish Oats courts millennials with stories and unconventional recipes.




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BP creating documentary on Gulf oil spill

Feature-length film to serve as an archive of the disaster, will only be shown internally.



  • Arts & Culture

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'The Big Fix': Documentary says Gulf oil spill crisis isn't over

Filmmakers Josh and Rebecca Harrell Tickell used their cameras to expose the ugly truth about the spill, when it became clear that the problems are ongoing and



  • Arts & Culture

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What's killing the Gulf of Mexico's dolphins?

Two years after the BP oil spill, the Gulf is still suffering a historic dolphin die-off. Experts say oil is a likely culprit, but evidence remains elusive.




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Dolphin deathtoll: Feds declare 'unusual mortality event' on East Coast

The NOAA suspects the infectious morbillivirus is responsible for the unusually high number of dolphin strandings and deaths this month.




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Watch: Mother/daughter doctor heroes

Meet the "Saints of Somalia," a mother-daughter doctor team who have built a hospital, a school, and a peaceful community in the face of oppression and a civil




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Don't forget grandma this Mother's Day

Don't forget grandma this Mother's Day. The older women in your family have lots to share if you take the time to listen.




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The wackiest moms of the animal kingdom

While Mother's Day celebrates human mothers, there are a lot of other moms in the animal kingdom worth a shout-out.




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What's going on behind closed doors at the White House?

Despite claims that special interest groups don't have a place in the White House, some reports say that's not the case. Other reports simply don't exist.




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How to learn to do a handstand

Turn your world upside-down by practicing handstands, a whole-body move.



  • Fitness & Well-Being

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Why are American runners slowing down?

American runners are getting slower, and it's not because more women are running now then ever before.



  • Fitness & Well-Being

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When dogs and cats interrupt yoga

Dogs and cats can't help themselves when you unroll the yoga mat. They either participate or just get in the way.




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North Pole Marathon: Where the bitter cold slows you down and thoughts of polar bears make you go faster

Competitors from around the world line up on an Arctic ice floe to tackle one of the world's most difficult 26.2-mile races.



  • Fitness & Well-Being

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Guide dogs make history, and help a blind runner's dreams come true

Thomas Panek just became the first blind runner to complete the NYC Half Marathon with guide dogs.



  • Fitness & Well-Being

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Why do we walk with straight arms but run with our arms bent?

Researchers looked at walkers and runners with bent and straight arms to find out.



  • Fitness & Well-Being

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These sled dogs aren't walking on water, but something fishy is going on

Climatologist documents Greenland's warming conditions with a photo of sled dogs splashing in meltwater on top of sea ice.



  • Climate & Weather

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Think air quality doesn't matter? Look at Pittsburgh in the 1940s

Before clean air laws were passed in Pittsburgh, smoke left buildings in a nighttime shroud all day, yet air quality issues aren't really in the past.




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11 surprising facts about indoor air quality [Infographic]

Many American likely aren't aware that the air in their homes and offices may be cause for concern.




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Do you need a humidifier or dehumidifier?

Your health is influence by the humidity of your home so pick the right machine for your home and your needs.




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City life doesn't affect asthma rates as formerly thought

Research found no major difference in asthma rates of inner-city kids and those in other communities.




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'Under the Dome' air pollution documentary turns viral sensation

Since its release last Saturday, the film on China's crippling pollution has been viewed over 100 million times.



  • Climate & Weather

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What London's air could look like without cars

This is what London's air would look like without cars.




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How do we solve the school drop-off debacle?

Some cities outside the U.S. are banning school drop-offs by car. They say it saves time — and lives.




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Adorable American pikas vanish from a swath of California

Even core areas of pika habitat 'are vulnerable to climate change within a timeframe of decades,' researchers say.




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Once thought extinct, giant Lord Howe Island stick insects do exist

The giant bug, Lord Howe Island stick insect, was rediscovered in the early 2000s, and now scientists have confirmed it's in fact them.




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Green Dog of the Year Contest Gallery 1

MNN and Eukanuba are looking for the Green Dog of the Year. Enter your dog for a chance to win a year's supply of Eukanuba Naturally Wild Formula dog food.




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Green Dog of the Year Contest Gallery 2

MNN and Eukanuba are looking for the Green Dog of the Year. Enter your dog for a chance to win a year's supply of Eukanuba Naturally Wild Formula dog food.




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Green Dog of the Year Contest Gallery 3

NN and Eukanuba are looking for the Green Dog of the Year. Enter your dog for a chance to win a year's supply of Eukanuba Naturally Wild Formula d




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Green Dog of the Year Contest Gallery 4

NN and Eukanuba are looking for the Green Dog of the Year. Enter your dog for a chance to win a year's supply of Eukanuba Naturally Wild Formula do




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Green Dog of the Year Contest Gallery 5

NN and Eukanuba are looking for the Green Dog of the Year. Enter your dog for a chance to win a year's supply of Eukanuba Naturally Wild Formula dog




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Green Dog of the Year Contest Gallery 6

NN and Eukanuba are looking for the Green Dog of the Year. Enter your dog for a chance to win a year's supply of Eukanuba Naturally Wild Formula dog f




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Green Dog of the Year Contest Gallery 7

NN and Eukanuba are looking for the Green Dog of the Year. Enter your dog for a chance to win a year's supply of Eukanuba Naturally Wild Formula dog fo




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Green Dog of the Year Contest Gallery 8

NN and Eukanuba are looking for the Green Dog of the Year. Enter your dog for a chance to win a year's supply of Eukanuba Naturally Wild Formula dog foo




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Green Dog of the Year Contest Gallery 9

What does a green dog do? Check out the contestants. Enter your dog now!




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Green Dog of the Year Contest Gallery 12

NN and Eukanuba are looking for the Green Dog of the Year. Enter your dog for a chance to win a year's supply of Eukanuba Naturally Wild Formula dog food. W




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Green Dog of the Year Contest Gallery 13

NN and Eukanuba are looking for the Green Dog of the Year. Enter your dog for a chance to win a year's supply of Eukanuba Naturally Wild Formula dog food. We




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Green Dog of the Year Contest Gallery 14

NN and Eukanuba are looking for the Green Dog of the Year. Enter your dog for a chance to win a year's supply of Eukanuba Naturally Wild Formula dog food. We'




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Green Dog of the Year Contest Gallery 15

What does a green dog do? Check out the contestants. Enter your dog now!




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Green Dog of the Year Contest Gallery 16

NN and Eukanuba are looking for the Green Dog of the Year. Enter your dog for a chance to win a year's supply of Eukanuba Naturally Wild Formula dog food. We'r




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Green Dog of the Year Contest Gallery 17

MNN and Eukanuba are looking for the Green Dog of the Year. Enter your dog for a chance to win a year's supply of Eukanuba Naturally Wild Formula dog food. We'r




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Green Dog of the Year Contest Gallery 18

What does a green dog do? Check out the contestants. Enter your dog now!




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Green Dog of the Year Contest Gallery 19

What does a green dog do? Check out the contestants. Enter your dog now!




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MNN's top dogs: Puppies are green, too

There were so many adorable puppies entered in the Green Dog of the Year Contest, that we couldn't resist! Here's a gallery of 10 green puppies.




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Meet the top 10 Green Dogs of the Year

Check out the top entries from MNN's Green Dog of the Year Contest!




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Retweet MNN and win the documentary 'The End of the Line'

3 MNN Twitter fans will win a DVD of 'The End of the Line,' a documentary about overfishing that is narrated by Ted Danson.



  • Arts & Culture

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8 foreign food words English doesn't have

The Finns have a word for drinking alone at home in your underwear. What other cool foreign food words don't we have?



  • Arts & Culture

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Does Mercury hold clues to the birth of Earth's moon?

Mercury, the smallest planet in our solar system, may hold clues to understanding how the Earth's moon was born.




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How well do you know American cars?

This devilishly difficult quiz will separate the auto experts from the pretenders.