Least willow
What’s the smallest tree in the world? It depends on what you define as a tree, but my favourite candidate has the most adorable name possible: the least willow.
Category: Plants
Giant fungus trees
Trees first evolved some time in the Devonian and Carboniferous periods. Before trees, the largest organisms on land were Prototaxites. A metre wide, eight metres high … and a fungus.
The parent of all life
Evolutionary biology hypothesizes the existence of a single form of life that is the ancestor of all life currently on Earth: the last universal common ancestor (LUCA).
The Generalist Academy 