Laurie Santos: Can we learn how to be happy?

Stephen Sackur speaks to American psychologist Professor Laurie Santos, whose work at Yale University on the science of happiness has won her an audience of millions thanks to her podcast and free online courses. With strict lockdowns in many countries around the world, isolation, economic insecurity, the absence of family and friends, Covid is putting enormous pressure on our mental health. Can we really learn how to be happy?