Between presentations launching new PC processors and candy-colored refrigerators at last week’s CES, companies at the annual tech industry jamboree made a lot of big, flashy proclamations about climate change, some more serious than others, and most seeming to include at least one stock video clip of trees, solar panels and children frolicking in grassy meadows or on pristine beaches. General Motors unveiled a new zero-emission pickup truck and dropped hints about new EV models to come, while Panasonic, which calculated that it released 110 million tons of CO2 per year and accounted for 1% of global electricity consumption, reiterated a pledge to decarbonize its operations by 2030 and promised to make its products more efficient.