Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com. What is Bluetooth? – Henry, age 13, Somerville, ...

Auracast support rolls out to more smartphones and headphones. You can share your phone's audio with one or many friends. Your phone and headphones must support Auracast to access the feature. If ...