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Irrigation has been taking place for a long time ~ right ~ and we can pretty well establish when it was first implemented on a widespread scale because the Earth heated up.

That's way back when rice cultivation spread throughout China and East Asia.

Lightweight plastic pipe, cheap pumps, and other pieces of technology have allowed for a vast expansion of irrigation over the past 50 years.

Several issues back a Brit researcher saw his research into the matter of a coming Ice Age Glaciation published in Scientific American. It is his thesis that we are actually in the cool-down phase leading to widespread glaciation BUT widespread agriculture has served to keep the Earth warm. He pointed to a drop in global temperatures coincident with the great die-off of American Indians (1500-1600), and the consequent rise in global temperatures coincident with European/African re-settlement of the Americas.

Sorry. My "Tin Hat Alarm" failed to go off on your post.

I have since replaced its batteries and it's now working fine now ...whoaaa!....let me turn it down here.

There might be a coherent thought in what you posted, but I sure don't have time to search for it.

Irrigation has been taking place for a long time ~ right ~ and we can pretty well establish when it was first implemented on a widespread scale because the Earth heated up.

~ wrong ~

I don't have to be a climate scientist to know this for a falsehood. Very clearly, irrigation came after the warming that ended the last Ice Age, not before.