@layman,
that video is pretty much irrelevant. the entire existence of modern humanity is encompassed in one cycle of ice age-interglacial has prevailed on earth for the last two million years or so. There has been no diminution in the amount of co2 in that period, but a regular change in the amount of co2 in the atmosphere as in previous cycles. We have increased the amount of interglacial co2 by a third with no apparent stopping in that increase. When Co2 increases, it gets hotter. That alters weather, the intensity of storms, sea level, the timing of the return of spring and winter snow aount and snow melt, which means river flow gets earlier but crops depend on later increased flow. All ;of those affect where we can live, how we deal with destructive weather, and how we can grow crops. Bsically he doesn't deal with any of those effects, so it's basically a useless interview. No cigar for you, layman.