BIG has revealed visuals of the "whimsical" plant-covered H C Andersen Hotel it has designed for the Tivoli Gardens amusement park in Copenhagen. More about BIG reveals visuals of pagoda-like hotel for Copenhagen's Tivoli amusement park
Hungary has revealed plans to build a new carbon-neutral greenhouse-filled farming city that will be powered by renewable energy sources. More about Hungary plans €1 billion greenhouse city powered by renewable energy
Renewable energy could reliably power the grid at peak times using an eco-friendly and cost-effective storage solution designed by Swiss start-up Energy Vault. More about Energy-storing concrete bricks could be key to proliferation of renewables
Brooks + Scarpa principals Angela Brooks and Larry Scarpa explain their concept for a public pavilion that could harness energy from lightning in our penultimate P.O.D.System Architecture movie. More about Brooks + Scarpa's inflatable pavilion concept captures energy from lightning storms
Renewable energy is now used to power all of Apple's retail stores, offices and data centres in 43 countries including the United States, the United Kingdom, China and India. More about Apple now operating on 100 per cent renewable energy
Haptic and Nordic Office of Architecture have released plans for a city next to Oslo Airport that is to be completely powered by self-produced energy and served by driverless electric vehicles. More about Haptic and Nordic to build "sustainable city of the future" at Oslo airport
A man-made island surrounded by wind farms in the middle of the North Sea could help bring large-scale renewable energy to Europe by 2050. More about Wind farms and man-made island in the North Sea could help Europe meet renewable energy targets
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
Architect Jouke Post has used recyclable materials to create a sustainable house for his family near Rotterdam, which he claims is the first Cradle to Cradle house in the Netherlands. More about Jouke Post uses Cradle to Cradle principles to build family house in the Netherlands
This concrete Second World War bunker in Hamburg has been converted into a renewable energy plant and visitor centre by urban development company IBA Hamburg (+ slideshow). More about Abandoned concrete bunker converted into a green power plant by IBA Hamburg