CSA Astronaut Chris Hadfield stores biological samples in the MELFI freezer of the International Space Station (ISS). The samples drawn from the crew of the ISS will be analyzed on the ground to better understand how living in space affects the human body.
These samples will give researchers insight into bone loss in space, which in turn can be applied to finding solutions for battling osteoporosis on Earth. To find out more about bone loss in space and how it can be prevented, see: http://www.asc-csa.gc.ca/eng/sciences/osm/bones.asp