By 2030, it’s estimated one out of every six people on planet earth will be over 60. Thanks to leaps in technology and public health, people are living longer and better than ever before.    We’re taking a look at what economists and demographers are calling “the Silver Wave.” Ray speaks with MIT’s Joseph F. Coughlin,and New York Times Tokyo Bureau Chief Motoko Rich, on the challenges – and opportunities – that global aging presents.  Guests:   Joseph F. Coughlin, PhD, Founder and Director of MIT’s AgeLab   Motoko Rich, Tokyo Bureau Chief for the New York Times   Host:   Ray Suarez   If you appreciate this episode and want to support the work we do, please consider making a donation to World Affairs. We cannot do this work without your help. Thank you.