All our stuff

This post is for anyone who's ever wondered how much human-made stuff there is on the earth, and how it compares to the natural world.

To sum it up, there's more stuff - in both mass and in variety - manufactured by humans.

The stuff we've made amounts to "30 trillion metric tons . .  about 50 kilograms for every square meter of Earth’s surface."

And it all weighs much more than the combined weight of all humans: "Human-made things are 60,000 times as heavy as humans themselves."

photo: sciencenews.org