In the end, the ceramic mug comes out as the most eco-friendly choice, but only if you keep using it and maybe even use it more than once between washing. (I'd suggest rinsing between uses.

My coffee mug needed a firmware update. Not the usual start to my caffeine-fueled day, no, but a side-effect of Ember's ceramic mug, an app-controlled kitchen addition to the Internet of Things.

The Ceramic Mug is embedded with a number of temperature sensors and a microprocessor-controlled, dual-band heating system, which promises to keep your coffee or tea at your preferred temperature.

The best coffee mugs survive years of hot drinks, accidental drops, and trips through the dishwasher. Here are our top picks in ceramic, glass, and more.