Researchers draft the first comprehensive tree of life

“It’s very poetic to talk about a tree of life, where every species can trace its roots, but actually illustrating this tree is no mean feat when Earth has been home to at least 2.3 million known species. However, scientists have finally given it a shot. They’ve published the first draft of a comprehensive tree of life that shows every major evolutionary branch, ranging from the very first organisms to complex beings like humans. This isn’t a complete tree, of course (it’s doubtful that we’ll ever know all the species that ever existed), but it beats the patchwork from before.