00:00Scientists have confirmed something that changes how we understand the American West forever.
00:04The Colorado River is experiencing the worst megadrought in at least 1-200 years.
00:10Not decades. Not centuries. 1,200 years!
00:14Research using ancient tree rings and soil moisture records
00:17has traced the crisis back further than any written history.
00:21And the findings are alarming.
00:22Scientists have found that 40-50% of the river's declining water flow
00:27can be blamed on higher temperatures alone.
00:30Global temperatures have already risen 2.3 degrees Fahrenheit above pre-industrial levels,
00:35according to NOAA.
00:37That heat is pulling more moisture out of the land.
00:40A process scientists call evaporative demand,
00:43which has risen 5% in Colorado alone since 1980,
00:47Colorado's snowpack, the natural water tower of the West,
00:51just fell to its lowest level in more than 40 years.
00:55Precipitation in the upper Colorado River Basin is 7% below historic levels.
01:00Scientists say this is not a drought.
01:02It is aridification, a permanent shift.
01:04And they warn,
01:06it will keep getting worse.
01:07Disclosure.
01:08This video contains stock footage and content created or enhanced
01:11using AI-assisted tools AI generated.
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