Developers unveil plans for a 46-story apartment building in Sri Lanka with extensive, overflowing plantings on extra-big balconies.

Kaplan Thompson’s net-zero-energy farmhouse in Virginia, which meets Passivhaus standards and is on track for LEED Platinum, is also built for sheep grazing on its roof.

One of the latest projects to spring up around New York’s High Line, the Solar Carve Tower will minimize the shadows it casts while maximizing the daylight entering the building.

A planned NFL stadium for the Minnesota Vikings will use new, energy-saving sustainable tactics to battle snow buildup on the roof: passive solar and gravity.

Stonecutting produces an appalling amount of waste, but an architecture firm in Iran has proven that the leftover scraps can still be useful building materials.

New apartments in Galata, Istanbul offer a novel and very Middle-Eastern solution to the problem of how to adjust solar heat gain seasonally.

The George W. Bush Presidential Center, which harvests its rainwater and uses solar power, is the first presidential library to earn a LEED Platinum rating.

A newly invented material holds promise to cool buildings without using any power.

On a sunny Earth Day in Seattle, a ribbon-cutting ceremony was held for the new Bullitt Center, which is being called the “greenest commercial building” in the world.

The sweet spot that combines high energy efficiency with a Craftsman cottage look, without driving prices into the stratosphere.

The Big Apple is the focus of the Urban Green Council’s plan to reduce CO2 emissions by 90 percent by 2050, mostly through the use of better building materials and techniques.

Ocean House, on coastal Rhode Island, gives a modern twist to the classic 19th century boat shed, creating a windbreak and protecting inhabitants from solar gain.

A year after completion, the prefabricated, super-insulated Rainbow House in Whistler, B.C., became the first Canadian residence to be officially registered by the Passive House Institute.

The new 60-story Zhengzhou Greenland Plaza skyscraper uses a heliostat and a network of sun-catching exterior panels to draw in daylight and reduce energy costs.