@CNN: NASA backs designs for 3D-printed homes on Mars — and they look like beehives https://t.co/fMdnFdlg0y https://t.co/A0CdGywOgV

@CNN: NASA backs designs for 3D-printed homes on Mars — and they look like beehives https://t.co/fMdnFdlg0y https://t.co/A0CdGywOgV