We the people of Earth have a choice: keep acting like our plant allies, the yeasts, or adopt a more conscious policy of stewardship with the Earth. Note the verb was not "invent" but rather "adopt" and the preposition was "with," not "over." These are important details. We do not have the answers - but we can listen to the ones who know, if we choose to listen to them.

People have already made this choice before - and successfully. The Mississipians for instance - what happened to them? They built large cities of 50-60,000 people up and down the Ohio and Mississippi, yet vanished around 1450 AD. Why? Some say they must have died out, but I believe they transformed into migratory people to escape the wars for resources which happen whenever large surplusses of grain and goods are stored up in a city. And their cities (in flood plains) had to have very large platforms to keep the granaries out of the flood waters. That took labor - a lot of it - and that was probably often slave labor captured in war, if the Aztecs are to be a guide to the entirely vanished Mississipian culture.

Keep in mind, that unlike yeast we do have a choice as people whether we will live in harmony with, or in disdain for, the natural rhythms and ways of the Earth around us. And right now we have as many humans alive as have ever been alive before - in history. So we have a lot of work to do, and a lot of people to do it with, if only we choose to live rather than die in this frosty beer...