The US operator sets a net-zero target for 2040 but the emissions over which it has most control rose sharply in 2021.
The Japanese company watched electricity consumption rocket with its buildout of the country's fourth network – and that was before it had many customers.
After several years of talk about the rise of the robots, the industry still seems to be a long way from having a self-driving network.
The arrival of a new and supremely articulate chatbot is a worry for anyone whose job involves the written word, including many in the telecom sector.
The e-commerce giant is reckoned to employ about 1.5 million people worldwide and would be loss-making without its cloud business.