Did you know that all six basic tea types advance from a single plant,Camellia sinensis? Or that the tea bag was invented by accident? Or that tea is both a mental stimulant and an anxiety reducer, and the calculus of caffeine in it is fairly complex? All this and more in the lovely Little Tea Book – an illustrated field guide to the art, and science,and joy of tea. (Art by, of course, and Wendy MacNaughton.)
Source: brainpickings.org