We already know we need to pump the breaks on AI for a host of safety issues. However, perhaps the biggest concern is the sheer scale of electricity generation they require. One hyperscale data centre can require electricity equivalent to a fair sized city. Many data centre builders are keen to claim they'll use renewable energy sources... eventually. They'll just suck power off the grid "temporarily" or rely on "clean" natural gas for a few years. There are a decent number of states, provinces, etc. whose total emissions will double in a matter of months. Could the timing possibly be worse?
From a warming perspective, it's utter madness to let this build-out proceed unimpeded. New data centres should be required to be net-zero at power-up. Unfortunately, it's a race and the U.S. side of it has an administration that is actively rolling back policies that fight climate change.