A circular skylight in the tip of this pinecone-shaped treehouse by architect Claudio Beltrame in the Italian Alps allows the occupant to gaze up into the starry sky at night. More about Pinecone-shaped treehouse in the Dolomites allows visitors to sleep under the stars
The first photos have been released of Norman Foster's newly completed European headquarters for Bloomberg in London, which claims to be the world's most sustainable office building. More about Foster + Partner's Bloomberg headquarters is the "world’s most sustainable office"
This timber-clad residence designed by Australian firms Clare Cousins Architects and The Sociable Weaver is the first home in the Australian state of Victoria to achieve a "10 Star" energy rating. More about Clare Cousins Architects creates first carbon-positive home in Australia's Victoria
Awards should not be bestowed on buildings that boast sustainable credentials but lack other design merits, says Aaron Betsky in this Opinion column. More about "There should be no top 10 prizes for sustainable architecture"
Tessellating timber panels create graphic patterns on the exterior of this environmental education facility in Amsterdam by Bureau SLA, which also features a roof covered in solar panels (slideshow). More about Bureau SLA's environmental learning centre demonstrates sustainable building methods
This house near Hamilton, Ontario, relies on a combination of fireplaces and straw walls to keep it warm, with a rooftop meadow adding to its green credentials (+ slideshow). More about Straw bales insulate monochrome house in Ontario by Nicolas Koff
Solar panels cover the rooftops of these four townhouses in Boston by local firm ISA, allowing them to sustainably produce more energy and hot water than their occupants are likely to use (+ slideshow). More about Roxbury E+ townhouses in Boston designed to produce more energy than they use
Modular buildings specialist ArchiBlox has unveiled its prototype for a compact carbon-positive house, featuring "edible garden walls", a sunroom and an insulating grass roof (+ slideshow). More about Prefabricated house in Melbourne's City Square can produce more energy than it uses
Milan Expo 2015: robotic tractors will create patterns across a field of crops on the roof of this pavilion that Italian architect Carlo Ratti has designed for the World Expo 2015 in Milan. More about Robot tractors to farm crops on sloping roof of Milan expo pavilion
News: the world's first building to be powered entirely by algae is being piloted in Hamburg, Germany, by engineering firm Arup. More about Arup unveils world's first algae-powered building
Dutch design studio Tjep. has developed a concept for a self-sufficient retreat with a facade that opens like a cupboard and a moving "solar tree" on the roof (+ slideshow). More about Isolée by Tjep
Vietnamese studio Vo Trong Nghia Architects plans to address the housing crisis in Vietnam by introducing modular homes that use cheap local materials and are easy to assemble. More about Low Cost House by Vo Trong Nghia Architects
News: French designer Philippe Starck and Slovenian engineering company Riko will complete their first sustainable prefabricated wooden house this autumn, as part of a new venture to improve housing standards. More about Philippe Starck to complete first prefab wooden eco-house
Shanghai architects Polifactory have developed a concept for a rammed earth house that generates energy from a lake on its roof. More about HOUS.E+ by Polifactory
Architect John Lin has adapted the traditional style of a rural Chinese courtyard residence to create a village house that is entirely self-sufficient (+ slideshow). More about House For All Seasons by John Lin
Germany, one of six countries bidding to host the United Nations' Green Climate Fund, have selected Laboratory for Visionary Architecture (LAVA) to design a sustainable HQ in Bonn if their bid is successful. More about Green Climate Fund Headquarters by LAVA
Riddel Architecture of Queensland demolished a house in Brisbane, Australia, and then built a new home out of the salvaged materials. More about Hill End Ecohouse by Riddel Architecture
Oslo studio Various Architects and Pollen Architecture of Austin, Texas, have designed a green office building in response to the UN Framework Convention on Climate Change (UNFCCC) held in Copenhagen earlier this month. More about Skagen ØKOntor by Various Architects
Danish architects MAPT have designed a pavilion in Copenhagen made of recycled materials, including old shipping containers, to coincide with the UN Framework Convention on Climate Change (UNFCCC). More about Cop15 pavilion by MAPT