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In praise of the dumb home: A Passivhaus 25 years later

There is not much that can go wrong in such a simple concept. That's really smart.




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Ellis Passivhaus laughed at Chicago's Polar Vortex

Temperatures in January dropped to -24°F and an air source heat pump kept it comfy and cozy.




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Protest works: Australian Prime Minister backtracks (a bit) on climate change

He's not exactly treating it like a crisis. But at least he's doing something...




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It's time to put Passivhaus First

How my thinking has evolved in the last decade




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Indoor Air Quality: Causes Of, Testing, and Monitoring Indoor Air Pollution

Pollution from power plants, cars, and other transportation is a well-known contributor to outdoor air pollution, but our indoor air quality is often worse; it can be up to 10 times worse for you than the air outside. Microbial pollutants like mold,




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Hans Rosling: Debunking the myth that helping the poor is causing overpopulation (video)

The incomparable Swedish medical doctor and statistician Hans Rosling tackles a very perverse and tenacious myth about overpopulation.




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Is your dog scratching because of a meat allergy?

Who would have thought our canine companions could have allergies to a carnivorous diet?




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Sea level rise has caused $7.4 billion drop in home prices in Southeast US

You might want to rethink that dream house by the ocean.




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EcoCor brings Swedish building tech to the USA to produce passivhaus prefabs

It's a mix of good design, a tough standard and sophisticated engineering.




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GO Homes are predesigned, prefabricated, Passivhaus and possibly perfect

GO Logic have always designed beautiful homes. This was the next Go Logical step.




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Guess what's causing Americans the most stress?

This year's Stress in America survey by the American Psychological Association might make you feel not so all alone.




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Should your kitchen have a recirculating or a direct-exhaust hood? I am exhausted just thinking about it

It is a real problem when designing energy efficient homes, and it seems that there is no good solution except ordering in.




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Australian study finds gas stoves increase rate of childhood asthma

Perhaps having kids cooking with gas is not such a good idea after all.




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Passive House Institute's look at kitchen fans is less than exhaustive

Can a recirculating fan deliver the indoor air quality we should demand?




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What is Causing Early Puberty In Girls?

New York Times article asks a lot of questions, and doesn't deliver a lot of answers.




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Australia's Invading Camels Soon to Be Croc Food

Locals in one region of the Australian Outback have been terrorized of late by a roaming band of feral camels. Drought conditions and a recent heat wave are being blamed for driving some 6,000 camels into residential areas near




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Prehistoric shrimp emerge from Australian desert after heavy rain

Imagine millions of these slithering out from the mud? The eggs of this alien desert crustacean remain dormant for years, waiting for a bout of rain to hatch.




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Photo: Ruby throated hummingbird takes a pause

Our photo of the day comes from Akumal, Mexico.




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Two dead because trucks don't have side guards and cyclists apparently can't stay upright

In Brooklyn and Toronto, the same story: "accidents" where cyclists somehow lose control, fall under rear wheels.




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Czech President & Climate Denier Vaclav Klaus To Preside Over EU In 2009

Just when we thought there was a chance for a rationalist US Administration to mesh with the Climate-action oriented EU and with an increasingly open-minded China...[Vaclav] Klaus has called man-made global




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Australian School Ditches Bottled Water, While Another Becomes First Carbon Neutral School

While no longer breaking news, the endeavours of students and staff at two different Australian schools still merits attention. One school went bottled water free, whilst




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Prefab Australian home produces more energy than it uses

Designed to capture and maximize the flows of sunlight, water and air, this prefabricated home feels modern, light and spacious.




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Did climate change cause the Alberta flooding?

Nobody can say for certain. But that doesn't mean that the Conservative politicians have to deny it.




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US Federal Judge Awards Compensation For Chinese Drywall-Caused, Wiring, HVAC, Appliance Damages

A Federal judge has ruled that seven Virginia homeowners made legitimate damage claims regarding corrosion of metal items in the home and personal inconvenience caused by use of




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Tiny Techtonics timber urban infill wins Passivhaus Trust Award

This just pushes every TreeHugger button.




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Scottish Passivhaus is full of light and delight

House on the Highlands wins the rural category in the UK Passivhaus Trust Awards.




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A look at the Runners-up in the Passivhaus Trust Awards

The judges got it right this time.




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Passivhaus Trust announces nominees for ‘the Oscars for building performance'

Let's hope that unlike the Oscars, they make the right choices and open the right envelopes.




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RIBA Stirling prize goes to Passivhaus social housing project

The most prestigious prize in British architecture is given to the solidly green project rather than the flash in the pan.




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What will the world look like in 30 years? ARUP explores four plausible futures

It's a mix of speculative fiction and informed prediction. Which do you think is most plausible?




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Experts say dilbit could have caused Mayflower, Arkansas oil spill

According to experts in the failure of oil and gas pipelines, there are a handful of factors that can contribute to a pipeline rupture, like the one in Mayflower, Arkansas. A new report finds all were in play on the Pegasus pipeline.




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Patagonia gave $10m from 'irresponsible tax cut' to eco causes

'Instead of putting the money back into our business, we’re responding by putting $10 million back into the planet. Our home planet needs it more than we do.'




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Beer and pop cans are not being recycled because car and airplane makers don't like recycled aluminum

Remember how aluminum cans are "100 percent recyclable into pure aluminum"? They lied.




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Photo: Hummingbird pauses on a pink banana bloom

Our photo of the day comes from a cloudforest in the Andes of Ecuador.




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Here's the dirt on a rammed-earth renovation in Australia

Add heritage preservation, passive house design and a butterfly roof and it pushes a lot of buttons around here.




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Small carbon-neutral house in Australia built with recycled materials

Constructed as an "apartment-house" hybrid, this prototypical 753-square-foot house makes the most of a small lot.




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Australia slashed plastic bag use by 80% in 3 months – here's how

After a few big players entered the ring, the environment was spared some 1.5 billion plastic shopping bags in under 100 days.




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For first time, Australian court rejects coal mine because of CO2

Think global, act local.




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Australia is home to a surplus-food market

All food is donated and payment is optional.




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Australian high school gets rid of trash cans

Students will have to take home any waste that is not recyclable or compostable.




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Austin Maynard builds a beach bach

It's a small, wood, modest shack. What's not to love?




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Australia drops food to hungry wallabies

Thousands of kilos of vegetables will hopefully prevent starvation in burned-out regions.




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Burger King is running out of zesty sauce because of climate change

The 2019 horseradish crop was battered by unusually harsh weather, and the effects are showing up in fast food joints.




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These common sounds often cause seizures in cats

If your cat passes out from the sound of crinkling tin foil, she’s not alone.




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How did cats get to Australia?

A new study aims to settle the debate about how and when this invasive species was introduced to the island country.




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Nanoparticles from air pollution (mostly car exhaust) go straight into your brain

A new study finds that ultra-fine particles increase the risk of brain cancer.




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5 myths about jaywalking pedestrians who cause congestion by walking distracted

Studies prove these myths aren't true but nobody is listening.




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Forget about banning glass towers, instead demand tough standards like Passivhaus

Most glass buildings are a problem, but just banning them is the wrong solution.




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Globalized Beef, Palm Oil & Timber Corporations Now Main Cause of Tropical Deforestation

Confirming what previous studies have shown, new research from the Union of Concerned Scientists shows that the main threats to tropical forests are no longer from




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Exhaustive new study looks at kitchen exhaust and household air quality

Designing kitchen ventilation that works in really tight houses seems almost impossible.