Pigeons sure, but urban eagles and city vultures? A beautifully illustrated new book, Urban Aviary, spills their secrets.

Here's what to know about America's favorite bird of prey.

The reward for information leading to an arrest has climbed to $12,000.

Welcome to some of the most bizarre social behavior on Earth.

Some birds are charming, others majestic or graceful; the subject for our daily photo has it all.

Our photo of the day comes from above the Pacific Ocean.

Our photo of the day comes from Cape San Blas, Florida.

Few other animals are known to be intrinsically motivated to assist others in need.

Some moth species have evolved noise-cancelling abilities that are more efficient than today's sound engineering technology.

We visit the writer behind the Zero Waste blog TrashIsForTossers.com.

They also build a "tree house" for themselves. It's almost an indoor community.

A Brooklyn dinner party turns "dumpster diving" into an informative meal.

It's the usual fight between the contractor who wants to be paid for cost overruns and the developer who claims it's all a fixed price contract.

Common Good was started by Sacha Dunn and her husband Edmund Levine out of their personal desire to have refillable and eco-friendly option when it comes to cleaning supplies.

Although the term “Passive House” might seem to refer to single family homes, these concepts can be applied to all kinds of buildings.

We take a tour of a sustainable factory that turns discarded glass into durable building materials.

A new collaborative space dedicated to sustainable fashion design is now open for production.

A sustainably-minded designer makes cards and paper coins that you can plant.

Featuring eye-catching geometries, local and non-toxic materials, these unique furniture pieces meld a medley of traditional weaving and woodworking techniques.

Solar panels, distributed energy, resilient microgrids, and blockchain. Oh my!

Tomorrow's home urban farm may not need soil, just an Urban Farm Pod that doubles as an extra living space (emphasis on the "living").

Hand-made with high quality, sustainably harvested woods, this is one desk meant for both kids and grown-ups.

Great coworking spaces aren't just about "sharing desks" -- just like other intentional communities where people share resources, they need a common vision and more.

The Brooklyn Journalist covered this project like a blanket, and looks at some of the detailed claims.

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

These multi-talented stairs do more than one thing in this apartment renovation in Brooklyn.

One can build a house out of wood and cover it up, or one can celebrate the nature of wood, as this one in Slavonice, Czech Republic does. Designed by E - M.R.A.K. | Martin Rajniš, Kamila Amblerová, Václav Horecký, it is built out of unplaned, uncut

The vase designed and named after Finnish designer Alvar Aalto is an icon among the design-savvy. The now-classic piece was released in 1937 at the World Fair in Paris. Today, the vase is produced by Iittala, which has slightly changed the size and

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

Architects are often late bloomers. Frank Gehry is in his prime at 79; Ralph Rapson died at his drafting board last year at 93.

Turkish cities have been the stage for culture clashes in recent years, as residents of rural areas moved to urban areas in large numbers, bringing what many urbanites see as

Count Prague in on the trend toward green hostels and hotels: The opening late last week of a cool new central-city accommodation not only provides a fresh option for eco-conscious travelers, it also marks a green "first" or two

Heavy traffic, aggressive drivers, few bike lanes, and fear of theft made the Czech capital a place where cycling was "only for the brave," as an article for Radio Prague put

At least $40 million worth of carbon credits have been stolen in recent weeks from various registries across Europe, in what some are calling a growing black market for carbon credits.The Wall Street Journal explains that there are

Using mouth-blown glass and energy-efficient LEDs, this stunning chandelier looks like a creature from the ocean's depths.

A Czech church was 3-D mapped and made into a one of a kind musical instrument, controlled by visitors' laser pointers.

Prague-based permaculture activist Sophia Novack is raising funds to create a free online resource that can teach 'anyone (including you!) ... how to grow an incredibly productive backyard permaculture garden.'

Charred wood never looked so good.

The Freedomky is a nicely done modular design

The architects call it a "Conceptual Object" but it is pretty and real.

These apex predators play a much bigger role in ecosystems than most people suspect, and their absence causes all kinds of problems that we aren't always able to solve.

This woodland cabin in the Bohemia region of the Czech Repbulic keeps it simple but clever, with one end perched on a large rock.

Embedded in a hillside, this eccentric dwelling uses a series of functional ramps that connect all the spaces together.

We love transformers, those things that serve multiple functions. But I wonder about this one.

Sporting an attractive unibody frame, this meticulously handcrafted wooden bicycle is made to be strong yet flexible.

Inspired by arthropods, this minimalist all-wood home features a spacious-feeling interior and energy-efficient, passive heating and cooling strategies.

Because the greenest bomb shelter is the one that's already in the ground.

The inside of this updated caravan is surprisingly chic and comfortable.

Instead of combining the two poles of work and leisure, this simple and functional design separates them into distinct volumes.

It comes with a tiny bar, housed in the distillery's old elevator.