94. Plutonium: Weapons-Grade

Many episodes have incorporated geology, but this one is more about geography. (And amateur nuclear science.) 

To the person who said, "the episodes are never too long," I'm terribly sorry. 

For the first ever episode of Elementary, we look at the number one element. No, literally, hydrogen is number one on the periodic table... The simplest element there is, hydrogen is also the most abundant. In this episode we meet our presenters for the first time, as well as dis ...  عرض المزيد

Joe and Fergus chat about all things mercury and find that there's much more to it than just thermometers! It's been used since ancient times - some thought it was the key to eternal life, despite its poisonous nature. Find out more in this week's episode. 

Encore episode. Helium is the second-most common element in the cosmos, but it's far rarer on planet Earth. As part of our celebration of the periodic table's 150th birthday, correspondent Geoff Brumfiel shares a brief history of helium's ascent, to become a crucial part of rocke ...  عرض المزيد

The periodic table is an invaluable tool for scientists across the planet -- but how does it work? In this episode, Allison and Robert explore the creation of the periodic table. Tune in to learn more about the history and structure of the periodic table.