CES 2015: Swedish car brand Volvo is launching a prototype cycling helmet that offers two-way communication between the wearer and nearby drivers to help prevent accidents (+ movie). More about Volvo's connected helmet warns cyclists of car collisions
With just two days until Christmas, today's offering from our A-Zdvent calendar is the cardboard Wiggle Chair by architect Frank Gehry. More about Dezeen's A-Zdvent calendar: Wiggle Chair by Frank Gehry
News: Sou Fujimoto is one of three architects that have been selected to design buildings for a Hungarian museum complex in Budapest's City Park (+ slideshow). More about Sou Fujimoto to create House of Hungarian Music at new Budapest museum park
Design Miami 2014: New York artist and designer Sebastian Errazuriz has added a slatted cabinet that opens in waves to his range of unfurlable furniture. More about Wave Cabinet by Sebastian Errazuriz opens "like a paper fan"
Opinion: the now-defunct architecture firm FAT proposed a green bridge for London's River Thames in the 1990s as a form of social criticism. Now life is imitating art with Thomas Heatherwick's Garden Bridge, FAT co-founder Sam Jacob feels an apology is necessary. More about "The Garden Bridge is a magic bullet for a certain idea of the contemporary British city"
Not a fan of cold turkey? London product design firm Seymourpowell has developed a conceptual app to "design out Christmas food waste" for a future free from excessive leftovers. More about Seymourpowell's Waste-Free Christmas Dinner Maker is an app to tackle festive food waste
News: three international design teams, including architects Snøhetta and Allied Works, have developed designs for Hawaii's bid to host Barack Obama's presidential library. More about Hawaii unveils designs for Obama Presidential Centre bid
This glazed garden pavilion by architecture studio Barkow Leibinger offers scenic study spaces for resident fellows at the American Academy in Berlin (+ slideshow). More about Barkow Leibinger's Fellows Pavilion offers study spaces in a lakeside garden
News: NASA's Space Mission Analysis Branch has unveiled a research project to send astronauts to Venus, envisioning "lighter-than-air" pods that could hover above the clouds to house explorers. More about NASA wants to explore Venus with inflatable air-born "habitats"
Japanese studio Nendo has created a collection of shirts with integrated accessories for men and a range fastened with cufflinks for women. More about Nendo twists traditional details to enliven simple white shirts
Hexagonal slate tiles cover this extension to a west London home designed by architects Christian Ducker and Tyeth Gundry to create a bright and spacious new kitchen (+ slideshow). More about Gundry and Ducker's Slate House is an extension clad with hexagonal tiles
Made from almost 500 metres of rope, the Vermelha Chair by Brazilian designers Fernando and Humberto Campana is our A-Zdvent calendar's letter V. More about Dezeen's A-Zdvent calendar: Vermelha Chair by Campana brothers
A grid of white concrete frames the alternating glass and timber walls of this library in a French village by Studio 02 Architectes (+ slideshow). More about French village library by Studio 02 Architectes presents a gridded facade of wood and glass
Movable egg-shaped huts on a beach in South Korea were popular with readers this week, so we've collected together 13 strange and beautiful examples of mobile residences, refuges and retreats from the pages of Dezeen – including a tiny house delivered via helicopter. More about 13 unusual mobile homes and hideaways
Hungarian architecture studio Hello Wood has created an 11-metre-high Christmas tree for a square in central Budapest from 15,000 kilograms of wooden logs (+ movie). More about Hello Wood builds Budapest Christmas tree from 5000 pieces of firewood
The bulbous Up5 Chair by Italian designer Gaetano Pesce follows on from the 20 iconic seat designs we've already featured for our A-Zdvent calendar. More about Dezeen's A-Zdvent calendar: Up5 Chair by Gaetano Pesce
Do you have a favourite Aesop store design? Browse our new Pinterest board to view every one of the Australian skincare brand's outlets featured on Dezeen, including the boutiques that made it into our top ten roundup.
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News: the Prince of Wales has called for urbanists to "reconnect with traditional approaches" in an essay that lays out his vision for the future of architecture and planning. More about Prince Charles reveals 10 principles for "more mature view" of urban design
The concrete and chipboard components of this irregularly shaped holiday home in Japan have been designed to deal with the difficult conditions of its woodland site, from restricted lighting to hilly topography (+ slideshow). More about House by Double Negatives Architecture adapted to suit a difficult woodland site
Movie: in the final video interview from our exclusive series, architect Moshe Safdie says that architects are too concerned with designing objects to create skyscrapers that work with the city. More about Architects "haven't learned" how to connect skyscrapers to the public realm, says Safdie