A residential building in Hamburg, Germany is the first structure to get its power from algae within its walls. The 5-story building was entered into The International Building Exhibition by its creators, Spitterwerk Architects, Colt, Strategic Science Consult, and ARUP. It uses photosynthesis to convert light into heat and energy for the building. Gillian Pensavalle takes a look.

Cool Fact: GreenMedInfo.com since its inception five years ago has used either 100% solar-power or hydrological power to run its servers. Learn more about our project: http://www.greenmedinfo.com/blog/greenmedinfocom-mission-statement