A pair of tweezers holds a graphene transistor fabricated on a silicon wafer. An I-Corps team from the University of Pennsylvania is working on scaling up their cheaper method of making high-quality graphene, an extremely strong, conductive material one atom thick that was the subject of a Nobel Prize last year.
Theodore Hardeen (right) poses with brother Harry Houdini around 1901. Although Hardeen was the less-famous brother, he was also a magician and escape artist who continued to perform Houdini's routines after his death.
Courtesy of John Cox/wildabouthoudini.com
A truck driver cleans his windshield at a filling station in Milford, Conn. The long hours, weeks away from home and mediocre pay contribute to the trucking industry's shortage of an estimated 125,000 drivers.