S1 E1: Grow
Learn how humans begin life as a single cell and, over the course of a lifetime, grow into beings of more than 37 trillion cells. Plus, explore new discoveries that can help humans live longer, healthier lives.
Aired: 9/19/2018 | 0:55:11 | Expires: 9/24/20259/24/2025
WATCH ANYWHERE ON THIRTEEN EXPLORE