When Royal College of Art graduate Hotzu River Cheng found out that cooking fumes were a bigger cause of lung cancer than cigarettes among Chinese women, he set out to design a better extractor fan to protect them. More about Ring by Hotzu River Cheng at Show RCA 2012
Dezeen Wire: the final steel beam has been put in place at Four World Trade Center, the first rebuilt tower on the site of the September 11 attacks in New York City. The 298-metre, 72-storey tower was designed by Japanese architect Fumihiko Maki and has been under construction since 2008.
Ground Zero is also home to two fountains sunk into the site of the former Twin Towers, designed by architect Michael Arad and landscape architect Peter Walker. Watch an animation of the the fountains here.
The unfinished Freedom Tower nearby is already the tallest building in the city, set to reach 1,776 feet on completion.
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More about Four World Trade Center tops out
Digital manufacturing and open-source design are revolutionising the way designers make their products, reports Dezeen editor-in-chief Marcus Fairs in this latest article from our series on technology and design supported by computing brand Intel. More about Technology and Design: the digital industrial revolution
Hackney designer Mathias Hahn has created this oak chair referencing traditional alpine furniture for London company Another Country. More about Another Chair by Mathias Hahn for Another Country
Movie: the third tour we filmed at the Royal College of Art graduate show features work from the Innovation Design Engineering course, including a candyfloss machine for recycling plastic and a bicycle for recycling copper from electrical wires. More about Movie: tour of Innovation Design Engineering at Show RCA 2012 with Miles Pennington
Calling creative businesses in the London borough of Hackney! As part of our Designed in Hackney Day on 1 August, we're offering twelve FREE stalls at an indoor market at Hackney House on Shoreditch High Street. More about Call for submissions: Designed in Hackney Market
Rectilinear blocks of glass and concrete overlap one another at this house in Mexico City by architect Fernanda Canales (+ slideshow). More about Maruma House by Fernanda Canales
Artist Esther Stocker has built a disjointed grid of black blocks across the floor, walls and ceiling of Z33 – House for Contemporary Art in Hasselt, Belgium. More about Based on a Grid by Esther Stocker
The floors of this house by Tokyo studio HUG are connected by the steps of a courtyard that climbs over a roof (+ slideshow). More about Terrace Step House by HUG
Dezeen Wire: this weekend The Sunday Times featured us in their Home section's top-ten interior sites, describing Dezeen as "indispensable". Read the full article here.
Chilean architects Surco Studio have completed a rusted steel and concrete entrance and administration block for a school in Chile that was severely damaged by an earthquake. More about Administration Curricular Building Liceo María Auxiliadora by Surco Studio
Canadian designer Maskull Lasserre has created a series of shoes that leave animal footprints. More about Outliers by Maskull Lasserre
Architectural collective OH.NO.SUMO have tucked a miniature cinema into the steps of a building on a busy street in Auckland, New Zealand. More about Stairway Cinema by OH.NO.SUMO
This visitor centre in Tokyo by Japanese architects Kengo Kuma and Associates looks like a stack of smaller buildings with sloping roofs. More about Asakusa Culture Tourist Information Center by Kengo Kuma and Associates
Royal College of Art graduate Shing Tat Chung has created a superstitious robot that trades on the stock market according to the lucky numbers it generates. More about The Superstitious Fund by Shing Tat Chung
Movie: in the second of four movies filmed by Dezeen at the Royal College of Art graduate exhibition in London, leader of the Design Interactions course Tony Dunne talks about selected projects including mice with the DNA of Elvis and a prototype for a biological factory. More about Movie: tour of Design Interactions at Show RCA 2012 with Tony Dunne
Product designer Konstantin Achkov has created a range of flat-pack furniture that slots together like a puzzle. More about Stack by Konstantin Achkov
Royal College of Art graduate Imme van der Haak has printed photos of people onto silk shrouds so that the wearer's image is overlaid with someone else's face and body (+ movie). More about Beyond the Body by Imme van der Haak at Show RCA 2012
Japanese architect Takato Tamagami has completed two homes in Tokyo that are tangled around each other. More about N-House by Takato Tamagami
Graphic patterns and two-way mirrored glass create optical illusions on these furniture pieces by Royal College of Art graduate Kim Thome. More about The Reflection Range by Kim Thome at Show RCA 2012