In different locations worldwide, scientists are digging holes below the surface of the earth. Since 2009 they have been probing the deepest parts of our planet, building a picture of the ecosystem that thrives in such unlikely surroundings. And in December 2018 they revealed some of their incredible discoveries.
From the strange creatures that dwell in the depths of the world’s oceans to the countless insects and spiders that inhabit earth, our planet plays host to a dizzying array of life. In fact, a study published in the journal PLOS Biology estimates that almost nine million species currently exist here.