Large parts of western Europe were baking on Wednesday as a so-called heat dome brought extreme conditions that many forecasters warned could present a risk to life. A day after France recorded its hottest-ever day, Britain was on Wednesday set to see its highest ever June temperature, prompting the national weather forecaster to issue a “red heat health” alert for much of central and southern England, as well as Wales. It was only the second such warning ever issued by UK authorities following...