David Pogue sets out on a worldwide quest to find the key molecules and chemical reactions that have paved the way for human civilization, life, and even the universe as we know it. Stream all three episodes of NOVA l PBS' “Beyond the Elements” now on the PBS Video app. | PBS

From the mysteries of astrophysics to the secrets of the body, discover how far we’ve come in our search for answers. "NOVA Wonders," a six-part series, premieres April 25, 2018 at 9/8c on PBS: http://to.pbs.org/2GmPtgB | NOVA l PBS

3 comments | Think knights in shining armor are the stuff of legend? NOVA l PBS takes you inside the process that blacksmiths and armorers used to craft the gleaming suits - and then puts them to the ultimate test. TONIGHT at 8 pm. | TPT - Twin Cities PBS | Facebook