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Why the caulking gun (and the thermal imager) are the best weapons in the war against energy waste

Take a thermographic tour of my house to see why.




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Unprecedented 3D world map completed

Tandem satellite choreography has mapped the planet to 1-meter accuracy. In addition to amazing images, the data provides a treasure trove to earth scientists




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Photos: Women running the farm during WWII

War wasn't just a man's game, and it wasn't just about weapons. Soldiers gotta eat.




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Ducks enjoy a stunning sunset in Wisconsin (photo)

Madison is a city of lakes.




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Earthrise: The photo that launched a movement.

50 years ago today, the Apollo 8 astronauts took the photo that some say inspired the environmental movement.




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The Moneyless Manifesto Just Launched (Yes, It Is Free)

Mark Boyle has literally lived without money, so he had more room than most to critique our economy. Now he's formulated a manifesto.




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Is there a "fundamental logic of walkability"?

Getting people out of cars and rebuilding our main streets is not going to be easy, and cannot be oversimplified.




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A hydrogen economy could be built around airships

It could move goods, transport hydrogen, reduce CO2 and water the lawn all at once.




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France is being hit by a massive heat wave. Will it change the country and the culture?

The French consider AC to be unhealthy. Will they change their minds in the face of a changing climate?




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Greta Thunberg delivers searing speech to world leaders (video)

The 16-year-old climate activist holds nothing back when addressing the UN Climate Action Summit – this speech shows why she is having such an impact.




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Greta Thunberg rejects major climate award

The teenage climate activist said the planet "doesn't need any more awards."




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Greta Thunberg's climate strikes are moving online, due to coronavirus

It's no longer safe for groups of people to gather in public places.




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Teledisko: Defunct payphone booths repurposed as mini-discos

You thought disco was dead? Not with these old payphone booths, now transformed into ultra-exclusive, tiny dance clubs, complete with the disco ball.




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Solar powered scooter engineer needs a hundred monkeys

If you dream of testing the limits of solar powered mobility, but don't have the DIY gene, here is someone who can help




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3 Years After Tennessee Coal Ash Spill, Other TVA Ponds Just As Unstable

“The dangerous conditions behind the Kingston disaster were not isolated."




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Greenpeace Protests Coal & Mountaintop Removal Atop 400 Ft Power Plant

The green activist group's stunt seeks to draw attention to the devastation wrought by coal.




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Now your hair ties and scrunchies can be fair-trade, plastic-free

These handy accessories tick all the boxes for ethics and eco-friendliness.




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Stunning Public Kindergarten At Neighborhood In Need In Bogota

Do you know how much of the so-called green or cool architecture is often for expensive hotels, government or office buildings? Well, in this case, it's the complete opposite.




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Stunning Library In Tropical Colombia Has Permeable Rock And Wood Walls

Colombian tropical town Villanueva's popular library is an example of non pretentious architecture gone right. Projected by Alejandro Piñol, Germán Ramírez, Miguel Torres and Carlos Meza, it was built with local materials and




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1 Million Hectares of Colombia Underwater - Climate Change Making La Niña More Intense

Record breaking extreme weather isn't just plaguing the Midwest: Colombia has had 5-6 times more rainfall than usual for the past ten months--which has killed 425 people so far, covered 1 million hectares with water, and left 3 million people as what




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Medellin to Build Massive 46-Miles Urban Park Surrounding the City

The city's new mayor has announced an ambitious project to build a park aimed at providing new public spaces and controlling sprawl.




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Venture With Impact: Unique program combines coworking abroad with volunteering

This startup offers tailored volunteering experiences where participants can continue working remotely while abroad, in addition to volunteering their skills in local communities.




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30,000 bees found inside the buzzing walls of NJ home

The Africanized bees slipped in through a small opening, set up home, and were busy making honey.




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Urban beekeeper using bee sounds and honey to make experimental music (Video)

Did you know honey has its own sound? Using honey and other tools, this bee enthusiast wants to raise awareness about bee colony collapse disorder through music.




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Quebec announces restrictions on honeybee-harming pesticides

While not banning the killer pesticides altogether, the new measure will at least hopefully help the beleaguered pollinators.




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'Bike Around The World' is a highlight of my summer

It brings together all of my favorite things – food, friends, travel, and biking, of course.




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Particulate Matter levels in London Underground are 18 times as high as the air outside

And the air outside in urban London is pretty awful.




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Yucatan Travel Journal, Day 2: Healing plants, underwater sinkholes, and a carbon offset forest

As part of an ongoing series about the Maya Ka'an community-based tourism initiative, this was my first official day in the Mayan region, and it was certainly full of adventure.




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Summertime means heading to the shore, in both town and country

Katherine lives in rural Ontario. Margaret lives in New York City. The way they enjoy their summers is bound to be drastically different.




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Startup lets you swap unused vacation days for cash, flights or hotel

There's an "epidemic" of unused vacation days in the United States. This startup wants participating companies' employees to trade them in for plan contributions, or booking flights and hotel accommodations.




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BPI's Response to Outrage Over Ground Beef? 3 Governors and a T-Shirt

Beef Products Inc took its best shot at making up for its silence during weeks of public lashing over what has been dubbed “pink slime,” an additive in ground beef made through a high-tech process that BPI invented.




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Pink slime's school lunch comeback hits 7 states

Known as "lean finely textured beef," the highly processed meat has been dropped from by many fast food chains, but are still one the menu at public schools.




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If cows could fly: What's in United Airlines' biofuel?

It turns out that it's probably beef fat.




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Danish Council on Ethics releases its report on beef as a 'climate damaging food'

The report argues why a beef tax would be an effective step toward curbing greenhouse gas emissions and why we should all be paying more for climate-damaging foods.




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What's in your dust bunnies?

Enough toxic stuff that you should get out your vacuum cleaner.




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Laundry in a time of COVID-19

Amid all the confusion, here's some solid advice on how to keep your clothes clean and free from contamination.




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Modular multifunctional unit for small & narrow bedrooms

Handcrafted with softwood, natural oils and waxes, this furniture unit makes a tiny, narrow bedroom feel much bigger.




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Sleek multifunctional 'bedroom box' maximizes this small apartment

A cramped, rundown apartment gets a makeover with this mysterious-looking black box.




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Urban tiny house's versatile lounge comes with an elevator bed (Video)

This well-crafted tiny dwelling has its own space-saving elevator bed that can go up and down with the push of a button.




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Dutch wind turbine crowdfunded in just 13 hours

Crowdfunding the latest gizmo is one way to be an early adopter, but all you get out of it is a gadget. Crowdfunding a renewable energy project, on the other hand, could deliver clean energy to your home.




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Portable, collapsible wind turbine weighs less than 4 pounds

The WindPax wind generator fits neatly into a backpack for hiking or can be used in the backyard too.




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New York City’s biggest industrial wind turbine is up and running

A recycling center’s turbine could pave the way for industrial-scale wind power in New York City.




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These Moroccan sunsets will make you want to want to go to Africa

There's nothing like watching the sun go down on a beach in a tiny African village.




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Critically endangered mountain gorillas show impressive population increase

Mountain gorillas have become the only wild apes whose population numbers are known to be improving.




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Women around the world are having fewer babies

A new study found global fertility rates are on the decline in hundreds of countries




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How good were Neanderthals at hunting?

A new study investigates our ancient cousins' hunting abilities.




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Alexander Julian Designs Green UNC Graduation Regalia

Fashion designer Alexander Julian has clearly had enough of the University of North Carolina's aqua graduation gowns, he's gone and given his alma




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On the Road with Urban Green at Winthrop University

Big surprises can come in little packages - and that's what I found when I visited Winthrop University during my book tour stop at the school. The campus is located just south of Charlotte, NC in




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An In-Depth Look at the University of Washington, Sierra Magazine's Top Cool School

We've scratched the surface of Sierra magazine's Cool Schools list on Treehugger before, but this time I've decided to dig into one of the schools so we can learn more about what




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Young Americans Do Care About the Environment

Student activism nationwide flies in the face of a recent study claiming young Americans don't care about the environment.