Italian architect Stefano Boeri has unveiled plans for a city near China's Liuzhou, featuring towers completely covered in trees and plants to combat air pollution. More about Stefano Boeri designs "vertical forest" city to eat up China's smog
Plants will spill out between the overlapping wooden blocks that make up the facade of this hotel, which Kengo Kuma & Associates has unveiled for a site on the left bank of Paris' river Seine. More about Kengo Kuma reveals plant-covered Eco-Luxury Hotel for Paris
Royal College of Art graduates Katrine Hesseldahl and Victor Strimfors have designed a modular sofa made from three distinct layers in an attempt to combat furniture waste. More about RCA graduates propose new Strata system as a way to extend the lifecycle of furniture
After a crisis that saw rubbish pile up in the streets of Beirut, local designers were inspired to use the waste around them as a resource. Here are eight recycled projects that showcase their ingenuity. More about Eight recycled design projects driven by Beirut's trash crisis
A crisis that saw mountains of garbage fill the streets of Lebanon led to heightened interest in recycled materials, say designers and architects at Beirut Design Week. More about Lebanese designers embrace rubbish following Beirut trash crisis
Brunel University student Aleksi Vesaluoma has developed a technique for using mushroom mycelium as an environmentally friendly construction material. More about Structure grown from "mushroom sausages" shows potential for zero-waste architecture
Dutch company SunGlacier's off-grid Desert Twins harvester can collect water in the hottest and driest of environments. More about Sunglacier harnesses solar power to harvest water in Mali's Sahara Desert
Curl la Tourelle Head Architecture has drawn up plans for "London's greenest public building", a school that would be entirely powered by tidal movements of the River Thames. More about Vision unveiled for London school powered by Thames tide
Miracle material graphene – considered the strongest substance known to science – has been used to make eco-friendly paint by manufacturer Graphenstone. More about World's first graphene paint launches in the UK
Harvard University, Snøhetta and Skanska Technology have teamed up to retrofit an old house, demonstrating how existing buildings can be made more energy efficient to help address climate change. More about Snøhetta's Harvard HouseZero aims to "solve one of the world's biggest energy problems"
Berlin-based architect Sigurd Larsen designed these two larch-clad homes as a sustainable and affordable model for an "organic" housing development in Hvalsø, Denmark. More about Sigurd Larsen designs affordable homes for eco-housing development near Copenhagen
Many architects are still not addressing the environmental impacts of their buildings, claims the American Institute of Architects, in response to Aaron Bestky's recent critique of its COTE Top Ten sustainability awards. More about Architecture "hasn't caught up" with sustainability goals says AIA
Daan Roosegaarde has unveiled the next concept in his Smog Free Project – a bicycle that would inhale polluted air, clean it and release it around the cyclist. More about Daan Roosegaarde's Smog Free Bike would generate clean air as you pedal
The University of Massachusetts Amherst's new design school is the first academic building in the US to have a structural frame made of cross-laminated timber, according to its architects Leers Weinzapfel Associates. More about Leers Weinzapfel completes America's first cross-laminated timber academic building
US firm Goettsch Partners has completed a glass skyscraper with a compact footprint, which responds to its placement next to active train tracks and the Chicago River. More about Riverside office tower in Chicago by Goettsch Partners rises from sharply tapered base
A technology-driven home-building company in California says it is "doing for homes what Tesla is doing for the car". More about Cover uses computer algorithms to design prefabricated dwellings
As the state of the environment becomes an ever-pressing issue, designers are developing eco-friendly alternatives to all sorts of products. To celebrate Earth Day, we've rounded up 10 examples, including a kitchen made from recycled bottles and a pollution-absorbing bikini. More about 10 sustainable designs that offer alternatives to everyday products
Skylights top eight angular peaks on the roof of this exhibition centre in the Chinese city of Nanjing by architecture firm NBBJ, funnelling natural light down into the interior. More about Mountain landscapes inform peaked roof of NBBJ's Nanjing exhibition centre
New York firm Buro Koray Duman has taken cues from vernacular agricultural structures for the first-phase expansion of an artist's foundation. More about Buro Koray Duman adds barn-like gallery to artist's residence in Upstate New York
US firm Holst Architecture took cues from Spanish architect Antoni Gaudí while conceiving a pair of commercial buildings in central Portland. More about Holst Architecture wraps curvaceous facades of Portland office buildings in cedar