Escaped camel, cow and donkey in Kansas are 'halfway towards a live nativity.'

Air conditioners have made architects lazy, and we've forgotten how to design houses that might work without it.

Why not design our homes so that we can get at the things that need to be changed? That's the idea behind "Open Building".

With its edible veggie walls and lack of traditional HVAC systems, Carbon Positive House aims to "free us of modern day lifelines."

SwimCity is a housing concept for young Swedes who don't mind donning goggles or hopping in a canoe as part of their commute.

Just ask Jenna and Guillaume, who quit their 9-to-5 jobs to pursue their dream of touring North America in a custom-built tiny house.

Bjarke attack! The Danish maverick is the subject of a climate-themed retrospective at the National Building Museum.

The Passive House Institute and the Passive House Institute US are making news this week as standards change and they diverge further.

A tour of the Bullitt Center in Seattle confirms that it's as green as it can be.

In rural stretches of Connecticut and Tennessee, two nature-surrounded retreats built for retirees.

Forget Pat Conroy ... nothing says 'summer reading' like upcycling bibles and tiny house memoirs.

Michael Green, champion of lanky, carbon-neutral buildings, sets his sights on the City of Light.

Friggatto cleverly evades the exhausting, expensive process of securing a housing permit in Sweden.

Heatherwick Studio's mighty pretty design for Maggie's Centre Yorkshire resembles a cluster of massive potted plants.

It's a little bit Ewokian, a little bit New Urbanist and a whole lot intriguing.

James Furzer's simple design is still situated on the streets — yet lifted slightly above them.

University of Cincinnati students score big in the 2015 perFORM Building Design Competition.

The man-made foothills are most definitely alive in Cupertino.

At 208-square-feet, Kasita smart apartments are roughly the size of 6 garbage receptacles.

Why move to the woods when you can live in a tower that doubles as a coniferous forest?

From the man who brought you the giant tetrahedron on 57th Street...

How they can provide some space for the next generation as well.

It's just like camping ... but with free WiFi and Malin + Goetz shampoo.

From Apple's Spaceship HQ to GE's Boston campus, these solar-integrated designs are raising the bar.

Situated next to the High Line, Solar Carve Tower is specifically designed not to bogart air and natural light from its neighbors.

It's a handsome, pared-down design, but where are the wheels?

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

A cylindrical concrete abode named O-Pod could squeeze into Hong Kong's scarce unclaimed space.

Donut-shaped and parked at the foot of a glacier, the Snøhetta-designed Svart hotel in Norway is the first of its kind.

Assembled as a local factory, the prefab housing units will house over 200 people at 3 different sites.

Milan, Italy's smoggy second largest city, envisions a future that's cooler, cleaner and swathed in green.

Finn the conservation dog was trained to sniff out pesky rabbits, and in the process he protect native plants and threatened Humboldt penguins.

A high-tech collaboration between astrophysicists and ecologists is helping to monitor and protect some of the world's most threatened animals.

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

There were once less than 1,000 of them left in Mexico and the U.S.

Conservationist Clay Bolt is using his images to influence laws and protect species.

Many well-known bird species are in danger of going extinct, according to the State of the World’s Birds 2018 report.

Eelgrass is thriving again, thanks to the help of a sea otter rehabilitation program.

Habitat loss and climate change have pushed the antechinus, a marsupial that looks like a small shrew, to the brink. And their sex lives don't help.

The mountain gorilla population is rebounding in the Virunga Volcanoes Region, according to census results announced by the African Wildlife Foundation.

The Sisters of the Monastery of the Dominican of Order have cared for the rare salamanders for 150 years.

This year's winning travel image from the Nat Geo contest features the beautiful tail of an endangered humpback whale calf.

This report highlights 25 apes, monkeys, lemurs, lorises and other primates on the brink of extinction.

Brazil's once-expansive Atlantic Forest has now almost completely disappeared.

Rare endangered Kemp's ridley sea turtles hatch on New York City beach, but they normally nest in the Gulf of Mexico.

Only 68 critically endangered Javan rhinos are left on Earth.

Rescuers in Cape Cod are racing to save wave after wave of "cold-stunned" sea turtles.

The newly identified species may already be at risk of extinction due to habitat loss, researchers report.

The 2019 Saving Endangered Species Youth Art Contest is open to children in grades K-12.

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