John Clarke, a comedian and political satirist beloved in Australia and New Zealand, has died at age 68. He's seen here in an undated photo provided by the Australian Broadcasting Corporation.
Groundlings comedy troupe founder Gary Austin has died at 75. Here he attends a January 2016 Groundlings event with actress Victoria Carrol-Bell in West Hollywood, Calif.
Araya Diaz/Getty Images for The Groundlings
Martin McGuinness, seen here arriving at 10 Downing Street in central London last October for meetings in his role as Northern Ireland's deputy first minister, has died at age 66.
Daniel Leal-Olivas/AFP/Getty Images
In this 1989 photograph, Thomas Starzl oversees a liver transplant operation at the University of Pittsburgh Medical Center. Starzl won a National Medal of Science in 2004.
Gene J. Puskar/AP