“If indeed the next little ice age or big ice age is beginning, massive areas of land will become too cold for agriculture.” – Ray Kraft
We may need tens of millions of greenhouses
By Ray Kraft
Assuming that we are now in the transition from the warm Holocene interglacial to the next era of glacial advance, the next ice age, mini- or major, it is plausible to assume that we will need all the energy we can get from all sources including solar – wind – nuclear – to sustain an industrial / technological economy for the next few thousands or tens of thousands of years, since our supply of oil and gas is probably not enough to sustain current product for more than another 30-40 years according to British Petroleum.
The last ice age lasted about 75,000 years, and some anthropologists think the sustained severe cold reduced the human population to fewer than 10,000 people.
If indeed the next little ice age or big ice age is beginning, massive areas of land will become too cold for agriculture – like Russia, Ukraine, Canada – we can expect social, political, demographic disruptions like nothing experienced in all of human history before now.
If the next ice age is more or less like the last, vast areas of entire continents will become covered in glaciers and ice sheets, sea level will slowly fall by 400 feet or so, leaving most of the world’s seaports miles away from water.
We may need to build tens of millions of acres of heated greenhouses to feed North America.