Living algae facades cover buildings, sucking in CO2 and sun to produce renewable energy

The world's first bio-reactive facade, where glass panels cultivate microalgae to produce renewable energy, was unveiled on a residential building in Hamburg, Germany in 2013. 

Since then, the technology has significantly improved, making the facade system an integral part of a building project that automatically provides heat and warm water.

Mashable and Arup are working together to showcase innovations from around the world that help make construction more sustainable. Read more...