Graduate shows 2015: a pair of Royal College of Art graduates have created a new way to climb trees – strapping steps around the trunk to form a spiral staircase up to out-of-reach branches. More about CanopyStair is a spiral staircase that straps around any tree trunk
Yellow and orange louvres add stripes of colour to the utilitarian facade of this school in Spain, but also allow teachers and pupils to adjust levels of shade and ventilation (+ slideshow). More about La Canaleta School by 2260mm features a facade of colourful louvres
Opinion: Google's techno-utopian campus design by BIG and Heatherwick is part of a new wave of interest in surprisingly self-centred "hippie architecture", says Mimi Zeiger. More about "The insidious return of hippie architecture"
The Baroque urban planning of Karlsruhe, Germany, influenced the latticed timber structure of this pavilion, created by Berlin studio J Mayer H to celebrate the city's 300th anniversary (+ slideshow). More about J Mayer H completes timber lattice pavilion to mark the 300th year of the city of Karlsruhe
The 3D-printing industry "is choking off its own revolution" with a combination of toy-like machines, over-priced materials and legal wrangles according to Francis Bitonti, the designer behind the printed dress for Dita von Teese (+ interview). More about 3D printing has stagnated, says pioneering designer Francis Bitonti
Beauty products are displayed on rows of shelves arranged like a library inside this Tokyo cosmetics store by Japanese design studio Nendo (+ slideshow). More about Nendo's Beauty Library presents organic cosmetics on bookshelves
This week's issue of Dezeen Mail includes the winner of the Guggenheim Helsinki competition, SelgasCano's 2015 Serpentine Gallery Pavilion and a wooden sauna built by students in Norway (pictured). There's also the latest news, jobs and reader comments from Dezeen.
Read Dezeen Mail issue 259 | Subscribe to Dezeen Mail
More about Dezeen Mail #259
The front and rear facades of this library in Zoersel, Belgium, have been divided up into house-sized volumes to help the large building fit into its residential context (+ slideshow). More about Omgeving's black brick library in Zoersel is subdivided into smaller blocks
Snøhetta has unveiled plans to build the first official market building in Portland, Oregon, for over 70 years. More about Snøhetta reveals design for Portland's first city market since 1942
An iPad controls the perforated shutters that concertina across the glass facade of this house in Linz, Austria, allowing its two software engineer residents to reveal or conceal views of the city (+ slideshow). More about Perforated shutters move mechanically to mask the facade of Archinauten's House GT
Fashion brand COS has released a limited-edition backpack to mark the opening of this year's Serpentine Gallery Pavilion. More about COS launches The Serpentine Bag to coincide with 2015 pavilion opening
This slatted timber garage is propped above the swimming pool of a house on a hillside overlooking Athens (+ slideshow). More about Hiboux Architects elevates slatted timber garage above the pool of an Athens house
The ground floor of this Osaka home by Japanese architect Masatoshi Hatamoto is sunken below street level to create more privacy for its residents (+ slideshow). More about House of Yabugaoka has its ground floor sunken for privacy
Designer Dror Benshetrit has unveiled three proposals for residential towers on different sites in New York. More about Studio Dror's conceptual tower designs for New York offer three takes on high-rise architecture
Creators of the proposed Lowline in New York, billed as the world's first underground park, have launched a Kickstarter campaign to help fund development of the project (+ slideshow). More about Lowline creators launch Kickstarter campaign for underground park in New York
Wooden furnishings have been integrated into the walls of this compact Madrid apartment by Elii Architects, allowing them to be folded away when not in use (+ movie). More about Tables, benches and an ironing board unfurl from the walls of a Madrid apartment by Elii Architects
Graduate shows 2015: Royal College of Art graduate Morten Grønning Nielsen has designed a glove that can be used to sculpt hard materials like stone and wood by hand (+ slideshow). More about Happaratus "power glove" carves objects with its fingertips
A group of UK schoolchildren has won an award for a conceptual condom design that would change colour when it comes into contact with a sexually transmitted infection. More about Colour-changing condoms proposed to detect sexual infection
Dezeen promotion: entries are now open for architects and designers to submit projects for the A' Design Awards and Competition 2016 (+ slideshow). More about Call for entries to the A' Design Awards and Competition 2016
Graduate shows 2015: students from the Oslo School of Architecture and Design have designed and built a seaside sauna made up of three wooden bands that stagger up over the rocky terrain (+ slideshow). More about Oslo architecture students build a wooden sauna that steps over the Norwegian landscape