22 (A) An unstated corollary to “Moore’s law” is that at any given time, all the machines considered state-of-the-art are simultaneously on the verge of obsolescence. (B) If all sources of electronic waste are tallied, it could total 50 million tons a year worldwide, according to the UN Environment Programme. (C) Many governments are conscious that electronic waste wrongly handled damages the environment and human health. (D) As viewers prepare for the switch, about 25 million TVs are taken out of service yearly.