Hannah Fry / Joya & Priya

Published: Dec. 23, 2016, 12:25 p.m.

The spotlight is on Santa this week on R\xf3is\xedn Meets. Mathematician Hannah Fry explains The Indisputable Existence of Santa Claus, while R\xf3is\xedn's daughters Joya & Priya report back on their trip to meet the man in the red suit at home in Lapland. And, as if that wasn't enough, we also have a festive ditty from Paddy Casey to get you in the mood for Christmas.