The Periodic Table is one of the most iconic -- and useful! -- pieces of data organisation to ever exist. Here's everything you need to know about it, from its history to how to use it, in just 11 minutes.
First published by Dmitri Mendeleev way back in 1869, the table is just as useful today as it was then. It's quite amazing: it neatly captures recurring trends among elements, which allows scientists to predict relationships between them and forecast the properties of new ones. And that's quite impressive considering that Mendeleev didn't know about all the elements when he invented it. [YouTube]