In last month’s column [“Automatic Pumpdown Systems,” Nov. 5], we talked in general about the automatic pumpdown cycle and why it is the only sure remedy for refrigerant migration to a compressor ...

Using artificial intelligence (AI) to manage nuclear weapon systems poses a catastrophic risk for humanity, the world's top institute on conflict research, SIPRI, has said in its 2025 yearbook.

Remember that automatic control systems are automatic in operation, but not self-repairing. Unless a building has a service contract with a reputable controls contractor to inspect and calibrate the ...