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How long does a water molecule stay in a river?

A water molecule's "residence time" in a given system can help us understand how pollution moves through water and help protect this valuable natural resource.



  • Wilderness & Resources

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What you need to know about aerosol sprays

Aerosol air fresheners contribute to, rather than reduce, indoor air quality problems. And they often contain toxic chemicals like formaldehyde and xylene.




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4 ways to be a citizen scientist on vacation

You can make a difference for environmental science while traveling, whether you're going to the beach, visiting a park or sticking to cities.




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A great tree 'migration' is underway

Soil organisms play a critical role in influencing a naturally occurring phenomenon known as "tree migration," say University of Tennessee researchers.



  • Wilderness & Resources

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Iceberg more than 5 times the size of Manhattan breaks away from Antarctica

Satellite images confirm another massive iceberg has split from Antarctica, this time from the Pine Island Glacier.



  • Climate & Weather

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A massive newly discovered cave may be the biggest in Canada

This middle-of-nowhere cave may have never been seen by humans.



  • Wilderness & Resources

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This may be why the 'devil worm' can live where no other animal can

Scientists complete the first-ever genome sequence of the deepest-living animal on Earth.




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United Nations says existing biofuel policies bad for the Earth

New report calls for less damage in the development of biofuels.




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Lobbyists say 'hold on' to E12 fuel

Twenty-three different groups want the government take more time to study the issue.




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How ethanol is saving fuel at Daytona 500

When the 43 NASCAR drivers start their engines for Sunday's Daytona 500, they will be doing so for the second year with American ethanol-blended fuel in their g



  • Arts & Culture

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15 moments to inspire you to stay outside after sunset

This Earth Hour, celebrate the beautiful moments in nature that only occur after the sun goes down.



  • Wilderness & Resources

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Bosses Day 2010: 5 eco-friendly gift ideas

Honor your favorite boss on this holiday, which falls on Saturday, Oct. 16, 2010.




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Play the Carbon Lottery

Buy a ticket for your chance to winning millions while fighting climate change.



  • Sustainable Business Practices

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6 ways GM will change under Mary Barra

Mary Barra is a GM insider, but she's also a change agent who will continue the company's aggressive comeback.




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Zipcar IPO may bring $75 million

Car-sharing service Zipcar is betting that name recognition will boost sales of its common stock in an upcoming initial public offering.




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How can I save gas while playing taxi driver to my kids?

Morieka Johnson can help you maximize those trips to school, tae kwon do, gymnastics, soccer ...




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Justin Bieber says, 'Don't text and drive'

If a celebrity endorsement gets kids using a phone app that prevents on-the-road texting, emailing and phone use, who am I to complain? But, for the record, Jus



  • Gadgets & Electronics

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GM announces OnStar, RelayRides partnership

GM owners with an OnStar-equipped vehicle can earn some extra cash by renting out their autos.




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The 30-Day Electric Bike Challenge is calling: Get out of your car and onto an e-bike

Apply to the 30-Day Electric Bike Challenge and you could be selected to receive an e-bike for a month in exchange for swearing off the use of your car.




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Indianapolis leads the way for electric vehicle fleets

The city fleet will have 425 Leafs, Volts and Energis on the road by early next year.




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When will EVs get sounds to warn pedestrians? It's coming, but expect delays

And no, we won't be able to use ringtones. (There will likely be standardized noises.)




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The armadillo in the road looked dead, but this woman stopped to check anyway

Countless people drove past an injured armadillo, until one compassionate woman came along.




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Don't feel weird about saying 'Hi' to strangers

Greeting people you pass on the street with a smile and "Hello" is good for you and them.



  • Fitness & Well-Being

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This folding A-frame cabin is a shoo-in for fantasy holiday wish lists

M.A.Di., a flat-pack tiny house from Italy, is a new take on a beloved classic.



  • Remodeling & Design

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Puget Sound getaway is pure freecycled genius

As its name implies, Scavenger Studio by Eerkes Architects was constructed from materials plucked from soon-to-be-demolished homes.



  • Remodeling & Design

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Wooden high-rise trend reaches new heights in Norway

Located in the rural town of Brumunddal in Norway, Mjøsa Tower nabs the title of world's tallest wooden building.



  • Research & Innovations

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Butt-breathing turtle that can stay underwater for 72 hours is endangered

The Mary River turtle, recognized for its algae-induced punk rock appearance and ability to breathe through its rear is endangered.




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Government pushes to remove gray wolf from endangered species list

U.S. Fish & Wildlife Service proposes letting states, tribes manage wolf populations, dropping endangered species status on the federal level.




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Calf sightings in Cape Cod Bay are big news for endangered right whales

Two mother-and-calf pairs of North Atlantic right whales have been spotted so far this year in Cape Cod Bay.




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From Beekman 1802, a Lump of Kohl for your holiday stocking

For my final last minute-ish holiday stocking stuffer pick, a bamboo charcoal- and goat milk-based skincare bar from the Fabulous Beekman Boys.




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Mother's Day gifts for the gardening mom

No matter your budget, we've got something to help your mom indulge her green thumb.



  • Organic Farming & Gardening

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The best times to buy gifts this holiday season [Infographic]

Black Friday and Cyber Monday aren't the only days when you can get good deals on a range of gifts.




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Holiday hostess gift idea: Divine Dark Chocolate Thins

Real peppermint oil or ginger oil make Divine’s Fair Trade dinner thins a welcome addition to dessert and coffee.




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Green Monday: 2013 holiday gift guide

If sexy smoke alarms and food-growing fish tanks fail to help you check that difficult to shop for person off your holiday gift list, than I quit.




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2013 Cyber Monday gift deals for the home cook

Here today, gone tomorrow deals to buy online for the home cook on your holiday shopping list.




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7 Cyber Monday deals for cooks and food lovers

Shop for great deals on small kitchen appliances, dinnerware, cookbooks and more from the comfort of your home with these Cyber Monday offers.




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MNN's 2014 holiday gift guide

Bamboo globes, reclaimed sailcloth planters and the requisite pair of socks are just some of this year's exceptionally giftable finds.




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5 'Buy One Give One' gifts to double your holiday giving

When you buy one of these gifts for someone on your list, a donation is made to someone in need.




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8 highly gift-able design books for the holiday season

'Tis the season for Cabin Porn and 200-page treatises on Norwegian wood chopping technique.



  • Remodeling & Design

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13 design gifts that give: A big-hearted holiday gift guide

Who said you can't partake in a little shopping on Giving Tuesday?




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Why we don't all see gift-giving the same way

How can men and women get on the same page about gifts?



  • Arts & Culture

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7 Valentine's Day bouquets that aren't roses

There are all sorts of other things to gather together into a bouquet and give with love.




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Holiday gift guide: 12 art and design gifts that give back big

Presenting a bevy of unique, useful and all-around lovely prezzies that support a range of good causes.




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Be a force for good on Shop For Good Sunday

Shop for Good Sunday lets you put your holiday spending where your values are.



  • Sustainable Business Practices

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A 'raft' of volcanic stone may be a lifesaver for the Great Barrier Reef

A floating sheet of pumice could bring an infusion of life to Australia's Great Barrier Reef.



  • Wilderness & Resources

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Toyota is giving away 100 cars in 100 days

Toyota's new "100 Cars for Good" program will give away 100 cars to nonprofit organizations in 100 days.




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'I was wrong' says former vegan diet advocate

Climate change journalist George Monbiot says he was wrong when he claimed 'the only ethical response is to stop eating meat.'




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Nearly 70% of turkey burgers contain fecal bacteria, says Consumer Reports

Overall, 90 percent of the ground turkey that the magazine examined had one or more of the five bacteria they tested for.



  • Protection & Safety

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U.S. creates first 'National Blueway'

Unlike the current patchwork of river protections, the National Blueway System will cover entire rivers 'from source to sea,' including their watersheds.



  • Wilderness & Resources

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Offshore drilling 'likely' in Arctic, feds say

Oil exploration will probably begin in Alaskan waters this summer, according to a top U.S. official, with more lease sales likely in the next four years.