I had the occasion to stumble upon two uniquely imagined facets of the same future over the past week. The first: The World Without Us, an eerily quiet scenario in which humans disappear from the Earth and nature slowly and persistently takes over. The second: Children of Men, a visually stunning dystopia in the form of a sterile and slowly vanishing human race.

Alan Weisman’s The World Without Us uses a rational, scientific approach to describe post-human Earth. Surprisingly, the book reads like a summer page-turner…that really makes you think. The story meanders from the planet’s wildest places - a primeval forest in Belarus and Poland - to areas where human conflict has driven human abandonment and nature has found peace - in Cyprus and Korea.

Weisman’s artistic description of what falls apart, what lasts, and what happens when we’re gone is like candy for the imagination. "In a dream, you walk outside to find your familiar landscape swarming with fantastic beings. Furry rhinoceroses, big hairy elephants, and even bigger sloths-sloths??" He continues, "a dream, or a congenital memory? This was precisely the world that Homo sapiens stepped into as we spread beyond Africa, all the way to America. Had we never appeared, would those now-missing mammals still be here? If we go, will they be back?"

He also describes how man-made structures would fare the conquest of nature. For example, even on a sunny day, the people who keep New York City’s subway system working have to pump 13 million gallons of water away. Without us, Manhattan would soon turn into a system of streams and rivers. Weisman paints a vaguely haunting picture of the future, but at the same time, it’s powerfully peaceful.

Children of Men explores a slightly different future. Faced with mass infertility, our flimsy facade of civilization quickly degenerates into widespread warfare and depravity. We continue to destroy not only our own creations, but also our planet. The cause of human sterility is never explained in the movie, but one cannot help but connect the dots to the many chemicals and plastics that infiltrate our air and water today.

Weisman also explores infertility in The World Without Us - through the eyes of the founder of the Voluntary Human Extinction Movement, Les Knight. His image of a sterile population is much more peaceful: "Like retired business executives who suddenly find serenity by tending a garden, Knight envisions us spending our remaining time helping rid an increasingly natural world of unsightly and now useless clutter, in pursuit of which we’d once swapped something alive and lovely. ‘The last humans could enjoy their final sunsets peacefully, knowing they have returned the planet as close as possible to the Garden of Eden."

How/if we ever go, it will remain true that human action has fundamentally altered the Earth’s climate. The effects will persist for centuries, whether we’re here to feel them or not - but it’s certainly fascinating to imagine the world in a state that we, by definition, could never see: without us.

Your House Without You