Mars colonies could benefit from bacteria that turn CO2 into 3D printable biopolymers

An ongoing synthetic biology project at Harvard Medical School is using bacteria to transform carbon dioxide (CO2) into more useful compounds, such as plastic. The innovative process, while still in its early stages, could one day be used to create building materials on Mars (where the atmosphere is composed mainly of CO2), which could in turn be 3D printed into structures.

from 3ders.org - http://www.3ders.org