Google's Project Loon, which uses high-altitude balloons to deliver internet access to remote areas, will begin testing with carriers in Indonesia and other regions this year. This marks the first time the system will be tested on commercial networks. Doctors also announced the successful 3D printing of functioning tissues and organs, including muscle, bone, and ear structures that integrated properly when implanted in animals. Researchers used a bioprinter and bio-inks to create micro-channel vascular networks within the tissues. This development moves medicine closer to printing tissues and organs for human transplantation.