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With the help of Empresa de Desarrollo Urbano/Urban Development Company (EDU) and La Sociedad Colombiana de Arquitectos/the Colombian Architect's Society (SCA), Medellín has launched an international competition to design a space to remember and reflect on the period between 1983 and 1994.

These years were some of the most violent in the Colombian city's history. In January 1988, a car bomb with 80 kilos of dynamite exploded in front of the Monaco Building, the former home of drug lord Pablo Escobar in El Poblado neighborhood. This was the first of a series of attacks between rival drug cartels in Medellin.

JP Morgan Chase announced this week that they had hired Foster + Partners to design their new global headquarters in New York. The project, located in midtown Manhattan, will replace the existing 1960s SOM design for the US investment bank.

This is not the first time Foster + Partners have been called in to handle a corporate headquarters project: the office is also responsible for the designs of the nearby Hearst Tower, Apple's Campus in Silicon Valley, and the Stirling Prize-winning Bloomberg HQ in London.

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Concrete may be the material most associated with modern Brazilian architecture; high resistance to compression and, when armed, capable of assuming various forms. Its plasticity has made it a favorite material for some of Brazil's most expressive architects of the last century.

Today, it is still widely explored in the architectural production of Brazil, either for its structural robustness, ease of maintenance, or aesthetic value.

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Frank Gehry's Grand Avenue towers are finally set to begin construction, over a decade after the project was initially proposed. Conceived as a public-private partnership, the towers are sited across from Gehry’s Walt Disney Concert Hall in downtown Los Angeles. The project was designed from a central retail core into the two terracing towers with a mix of retail, entertainment and residences. The $1 billion complex aims to turn Grand Avenue into a full entertainment district.

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London-based architectural and urban design firm ecoLogicStudio has unveiled a large-scale “urban curtain” designed to fight climate change. “Photo.Synth.Etica” was developed in collaboration with Climate-KIC, the most prominent climate innovation initiative from the European Union, to “accelerate solutions to global climate change.”

Photo.Synth.Etica, currently on display at the Printworks Building in Ireland’s Dublin Castle, captures and stores one kilogram of CO2 per day, the equivalent to that of 20 large trees.

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Herzog & de Meuron have unveiled their proposal for a mountain outpost in the Swiss Alps. “TITLIS 3020” is situated on one of Switzerland’s most renowned tourist attractions, the 3000-meter-high Mount Titlis.

The design forms part of a master plan for the area developed by Herzog & de Meuron, which includes the construction of the outpost, the redevelopment of an old beam antenna tower, and redevelopment of an underground tunnel.