There are about 7 billion human beings on the planet.
Earth is in the middle of a population crisis. While countless species have seen their numbers plummet in recent decades, with more than a few going extinct entirely, humans have seen theirs grow and grow — and the two trends are hardly unrelated. But incredibly, when considering the indelible impact we’ve had on the planet and the creatures we share it with in our brief time here, everyone alive today accounts for a whopping 12 percent of all the humans that have lived, ever.
