This week Kehlan talks with the 2015 Nobel Prize Winner for Physics, Arthur McDonald, about winning the award and how he got it for his ground-breaking work with neutrinos - one of the least-known sub-atomic particles.

Takaaki Kajita of Japan and Arthur McDonald of Canada have won the Nobel Prize in physics for discovering the “chameleon-like” nature of neutrinos, work that yielded the crucial insight that the tiny particles have mass.