Three 60-metre-high arches crisscross the deck of the Juscelino Kubitschek Bridge in Brasília, which provides the letter J in our alphabetical countdown to Christmas. More about Dezeen's A-Zdvent calendar: Juscelino Kubitschek Bridge by Alexandre Chan
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
OMA has merged a municipal office block from the 1950s with a pixellated steel and glass structure to create a new mixed-use building in Rotterdam's city centre (+ slideshow). More about OMA completes pixellated Timmerhuis complex in Rotterdam
Tiny porthole windows pierce this concrete extension to a Granada primary school by Elisa Valero Arquitectura – a protective measure against stray balls from the adjacent sports court (+ slideshow). More about Circular perforations create natural spotlights inside Elisa Valero's concrete school extension
Three design students have created a purposefully awkward chair that encourages sitters into a slump to highlight the long-term effects of slouching. More about Disposture chair forces sitters into an uncomfortable slump
This family home in Toronto by local firm Paul Raff Studio features a brise-soleil made of aluminium louvres, designed to "bounce sunlight deep into the space". More about Aluminium louvres screen facade of Toronto home by Paul Raff Studio
Bright white surfaces, industrial shelving and a grey marble counter create an uncluttered interior for this Porto clothes shop by local studio Fala Atelier (+ slideshow). More about Fala Atelier converts Porto shoe shop into pared-back fashion boutique
Royal College of Art graduate Iona Inglesby has launched a company that converts DNA data into unique graphic prints and patterned textiles (+ movie). More about Dot One produces personalised textiles and prints based on DNA data
Rising sea levels and a shortage of development sites are leading to a surge of interest in floating buildings, with proposals ranging from mass housing on London's canals to entire amphibious cities in China (+ slideshow). More about Floating architecture will offer "an improved way of living"
Google is attempting to improve the aesthetics of the home Wi-Fi router with coverings by 24 artists and designers, including a fake-fur sheath and a cover that turns a device into a fruit bowl (+ slideshow). More about Google aims to turn unloved Wi-Fi routers into design objects with crazy covers
The letter I in our Christmas countdown of contemporary bridges is The Infinite Bridge, a circular walkway installed on the Danish coastline to offer visitors panoramic views of their picturesque surroundings. More about Dezeen's A-Zdvent calendar: The Infinite Bridge by Gjøde & Povlsgaard Arkitekter
A floating window seat, a sunken roof terrace and a basement cinema room feature among the 33 projects shortlisted for Don't Move, Improve 2016 – a competition to find London's best home extensions (+ slideshow). More about London's best new extensions revealed in shortlist for Don't Move, Improve 2016 awards
Japanese design studio Nendo has partnered with eyewear brand Megane-Ichiba to redesign one of its classic pairs of glasses, adding reverse C-shaped hinges. More about Nendo redesigns Zerogra glasses to feature circular hinges
French studio Atelier Fernandez & Serres has completed a cultural centre outside Nantes featuring pale stone walls and sloping roof planes that echo the forms of neighbouring houses (+ slideshow). More about Pale travertine walls frame Cour et Jardin cultural centre by Atelier Fernandez & Serres
Future Makers: Alessandro Zomparelli of Italian design studio MHOX, which produces customised 3D-printed fashion accessories, says designing with computer algorithms is like exploring a new material (+ movie). More about Using computer algorithms in design is like "sculpting with a new material"
Design Miami 2015: American designer Ian Stell has created an expandable bench that forms two conjoined chairs when contracted. More about Ian Stell's Austrian Loop chair expands and contracts like an accordion
Kubo Tsushima Architects gave a curved form to this public toilet in Japanese town of Nakanojo, to avoid creating spaces for dust to collect or spiders to lurk (+ slideshow). More about Kubo Tsushima Architects develops an alternative to Japan's "dismal" public toilets
French chocolate company Alain Ducasse has released a dried fruit and nut-covered festive chocolate tree that comes in a flat-pack box. More about Alain Ducasse's chocolate Christmas tree is assembled like flat-pack furniture
A flight of stairs wraps around the exterior of this mixed-use concrete tower in Seoul's busy Gangnam district, freeing up prime rental space on the ground floor (+ slideshow). More about Sae Min Oh designs irregularly shaped block in Seoul as a "three-dimensional street"
Opinion: KPF's attempt to recreate the allure of a red Porsche on the facade of Los Angeles automotive museum has left us with an eyesore, says Mimi Zeiger. But can it teach us anything about our architectural now? More about "The Petersen isn't a good building, it's a western-town front posing as architecture"