Self-extinction: Male fertility, pesticides and the end of the human project

It is a common meme these days that humans are busy bringing about their own extinction. This is usually imagined to take the form of mass death resulting from the effects of climate change including food shortages, and/or from the rapid decline in the availability of fossil fuels, and/or from a worldwide pandemic … But what if our path to extinction is really taking the form of damage to human fertility?