Maybe it was a zombie apocalypse. Perhaps an alien plague wiped out civilization. Or it something we engineered ourselves. Regardless, most of humanity is destroyed.

What happens to the buildings, bridges, and dams when we’re not there to look after them? How long will concrete and steel resist armies of vines and rust? Which animals will rule over the ruins we once called home?

And when humanity rises from the ashes, how will it climb slowly back up the technology ladder? What will humans need to know to protect themselves, grow crops, and reconquer nature? Where will we settle, and what hard-won knowledge will we recover first? Read more