On March 3, 1974, the first episode of NOVA premiered. Since then, we've enjoyed over half a century of scientific adventures with viewers like you. Here's to sharing more incredible discoveries! | NOVA l PBS

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

Tonight at 9 on NOVA, discover the chemical reactions that constantly transform our world. | Vegas PBS