'Permanent bone loss': Calgary study finds astronauts suffer on return to Earth

'Permanent bone loss': Calgary study finds astronauts suffer on return to Earth

FILE - Canadian astronaut Robert Thirsk talks with students from Rockcliffe Elementary School as they get a first look at The Living In Space exhibit during its unveiling at the Canadian Aviation and Space Museum in Ottawa on Thursday, May 12, 2011. (THE CANADIAN PRESS/Sean Kilpatrick) FILE - Canadian astronaut Robert Thirsk talks with students from Rockcliffe Elementary School as they get a first look at The Living In Space exhibit during its unveiling at the Canadian Aviation and Space Museum in Ottawa on Thursday, May 12, 2011. (THE CANADIAN PRESS/Sean Kilpatrick)

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Medical investigator rules Baldwin set shooting an accident

The fatal film-set shooting of a cinematographer by actor Alec Baldwin last year was an accident, according to a determination made by New Mexico's Office of the Medical Investigator following the completion of an autopsy and a review of law enforcement reports. The medical investigator's report was made public Monday by the Santa Fe County Sheriff's Office along with numerous reports from the FBI on the revolver and ammunition that were collected following the shooting.

In this image from video released by the Santa Fe County Sheriff's Office, Alec Baldwin stands in costume and speaks with investigators following a fatal shooting last year on a movie set in Santa Fe, N.M. (Santa Fe County Sheriff's Office via AP)