Image | NOBEL-PRIZE/PHYSICS

Caption: Arthur B. MacDonald, professor Emeritus at Queen's University and researcher at Sudbury's SNOLAB, speaks on the phone shortly after learning that he was a co-winner of the Nobel Prize for Physics at his home in Kingston, Ontario October 6, 2015. Japan's Takaaki Kajita and Canada's Arthur B. McDonald won the 2015 Nobel Prize for Physics for their discovery that neutrinos, labelled nature's most elusive particles, have mass, the award-giving body said on Tuesday. (Lars Hagberg/Reuters)