3D Printers Can Print Bacterial Colonies

By BRYANNA SANTOS, age 10 Photo: Michael Coghlan 3D printers can be used to print bacterial breeding colonies. These bacterial colonies help scientists understand how infections that are resistant to antibiotics spread. Scientists also aim to use embryonic stem cells,...

U.S. Robot Planes Kill People from the Skies

Drones are planes that fly without a human pilot. The Obama administration has used drones in Iraq, Afghanistan, Pakistan, Yemen, Ethiopia, Somalia and Libya to kill people it thinks are a threat. The practice is controversial and likely illegal. PHOTO: Flickr/James...