From a few elemental building blocks, life created itself. And in the intervening millenia, a spectacular diversity and abundance of life has evolved. We know that there are at least 1.4 million kinds of living things. Estimates of the actual number of species in the world vary between biologists, ranging from five million to thirty million species. You can see that we are just beginning to get to know our neighbours.
Biological diversity exists on other levels than just the sheer numbers of species.
Looking among ourselves shows the incredible genetic diversity within just one of these millions of species. And on the level of landscapes , we all know that a desert is as different from a rainforest as is the arctic plain from a coral reef. We live on a stunning planet. And the farther away we travel from it, the more unique we see it to be. Space travellers have consistently been moved by the beauty of our blue-green orb floating in the black of the universe.