Well, all of us know the dozen sorts of ticking time bombs going on in the modern world, time bombs that have fuses of a few decades to — all of them, not more than 50 years, and any one of which can do us in; the time bombs of water, of soil, of climate change, invasive species, the photosynthetic ceiling, population problems, toxics, etc., etc. — listing about 12 of them. And while these time bombs — none of them has a fuse beyond 50 years, and most of them have fuses of a few decades — some of them, in some places,