Can marathoners break the magical two hour barrier?; 23andMe for Dogs; Killam Prize for engineering medical jello; and more

Air Date: May 06, 2017 12:00 AM ET

23andMe for Dogs; Can marathoners break the magical two hour barrier?; Exercise in a pill; The smallest race cars on the shortest racetrack; Killam Prize for engineering medical jello; Quirks & Question - Can cats really drink saltwater?