Unexpected pathway turns water and CO₂ into climate‑neutral methane on nickel–zirconia

A US startup wants to drop a full nuclear reactor a mile down a 30-inch hole and let the water above it supply the pressure while billions of tons of rock replace the containment dome. One hole would make 15 megawatts; 100 on one site would add up to 1.5 gigawatts.

Mayors of 40 of the world's biggest cities sign pact to mitigate impact of data centers on grid and water infrastructure

AI’s environmental costs threaten water, land and climate