Midday Fix: Author of “Clash: Presidents and the Press in Times of Crisis”

In these days of streaming, it’s little-known that you don’t have to pay to pick up local TV stations. All you need is a good antenna with enough range.

A modern endoscope is a camera on a flexible stalk, with a light source, image sensor and optical-quality lens.

Sonos Port and Amp gadgets are excellent for wireless streaming, but you must know a few things before deciding which device to get.