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EPA: Proposed Pebble Mine could destroy Alaskan salmon fishery

The mining project, one of the largest ever conceived, could hold $500 billion in gold and copper.



  • Wilderness & Resources

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11 abandoned Old West boom towns

Gone but not forgotten, these once-bustling mining outposts offer visitors a look at Old West ghost towns, from kitschy to untouched.




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Say hello to the 'Virgin Rainbow,' the finest opal ever unearthed

Worth more than $1 million, this gemstone is distinguished for its rich color palette and light-refracting qualities that defy description.



  • Wilderness & Resources

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Architect behind the 'ugliest house in Queens' responds to his critics

Complimentary or not, Thomas Paino welcomes the attention being lavished on his super-efficient Long Island City rowhouse.



  • Remodeling & Design

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Nest provides Airbnb hosts with its signature smart thermostat

The Silicon Valley tech startup and the lodging platform partner to help make vacationing in a stranger's condo a more energy-efficient affair.



  • Sustainable Business Practices

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How to fight climate change: Invest in inner cities

A new online investing platform will fund energy-efficiency improvements for churches and nonprofits in poor neighborhoods.




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Smithsonian festival will kick off shuttle Discovery's new career

NASA's space shuttle Discovery is set to land in Washington, D.C. this April, where the now retired fleet leader — the world's most flown spacecraft — will




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C. Gordon Fullerton, shuttle test pilot and astronaut, dies at 76

Gordon Fullerton, an Apollo-era NASA astronaut who was among the first test pilots to fly the space shuttle, died on Aug. 21.




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NASA's crash test dummies redefine the role

NASA's crash dummies are worlds tougher than their car-testing cousins.




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In Japan, work kicks off on the world's largest floating solar farm

At a reservoir outside of Tokyo, water and electricity do indeed mix.




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Washington's largest rooftop solar array will be atop an IKEA store

As it turns out, the Swedish retailer's rooftop power plants are also the biggest in several other states.




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China launches world's largest floating solar farm

You might be familiar with floating wind turbines, but what about floating solar panels?




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Puerto Rico turns to Tesla to help restore power

In the wake of Hurricane Maria, Puerto Rico may turn to Tesla turning disaster into an opportunity to avoid future blackouts.




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Seawater Greenhouse brings agriculture to world's harshest environments

British tech startup Seawater Greenhouse makes the impossible feat of growing crops in arid regions possible with the help of plenty of sunshine and saltwater.



  • Organic Farming & Gardening

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Paul Greenberg answers the trickiest questions about fish, our last wild food

Is responsible seafood the answer to our health and environmental crises? Author Paul Greenberg explores in a new PBS documentary, "The Fish on My Plate."




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The Flow beehive harvests honey without opening hive

The creators of the original Flow Hive are back with a new model.




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Canada's biggest national park is under siege

A new study suggests the UNESCO status of Canada's Wood Buffalo National Park is in danger.



  • Wilderness & Resources

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The Gulf needs a restoration economy

Was the Gulf oil spill actually good for the region's economy? Maybe in the short-term—but the Gulf needs a long-term restoration economy, says Conservancy sc



  • Wilderness & Resources

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Transocean the subject of tax loophole investigation

A '60 Minutes' investigation shows that the company that owned the Deepwater Horizon rig moved its headquarters to avoid paying taxes.




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The craziest oil spill painting you've probably seen

What's your interpretation of this bizarre painting found on the news sharing site Reddit?




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U.S. Senate passes Gulf RESTORE Act

The amendment, part of a pending transportation bill, marks the Gulf Coast's 'most important conservation victory in a decade,' advocates say.



  • Wilderness & Resources

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12 animals with the longest gestation period

Human mothers have a relatively long gestation period compared to the rest of the animal kingdom, but a few animal mothers go even further. Here's our list of t




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Best countries to be a mom

U.S. scores lower than many smaller and poorer countries on world motherhood rankings.




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Nature's 7 meanest mommies

In celebration of Mother’s Day and all the lovely things our mothers have done for us — like, not eating us — here’s a rogues’ gallery of some of nat




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Mommy Greenest: Mother's Day Gift Guide 2012

While Mother Nature is undisputedly the center of attention this coming weekend, don't forget that there's another Mother-celebrating Sunday on the horizon ...




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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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Concept of 'fat but fit' questioned in new study

A new study buries the concept of "fat but fit," and finds that obesity is more dangerous than a lack of fitness.



  • Fitness & Well-Being

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How to increase good cholesterol

There's no one-size-fits-all solution for raising HDL cholesterol levels, but it can be done — and understanding inflammation is an important step.



  • Fitness & Well-Being

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New ozone-destroying chemicals discovered in atmosphere

Loopholes in the Montreal Protocol may need to be tightened, researchers say.



  • Wilderness & Resources

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Flea fossil may hold ancestor of bubonic plague

It's no Jurassic Park, but a flea stuck in amber for 20 million years may still shed light on the Black Death.




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School-age boy saves a species after quest to find an 'extinct' frog

The Jambato harlequin frog had been feared extinct for at least the last 30 years.




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Haiti is now almost completely deforested

The Caribbean nation of Haiti was once lush with trees and the animals that lived there, but now only a few sections of primary forest remain.



  • Wilderness & Resources

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Enter MNN's Oasis of the Seas contest to win a free cruise

Sign up for MNN's weekly newsletter for a chance to win a cruise on Oasis of the Seas.




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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!