PARIS (AP) — Commuters bared lots of skin, temperatures broke records in cities and towns, and millions gulped down water or splashed away in it as Western Europe sweltered in a heat wave. Authorities in France and elsewhere, mindful that thousands died during a 2003 heat wave, were reaching out to the elderly, families and other vulnerable people Wednesday to make sure they realized the health risks. Temperatures in Paris were expected to hit 39 degrees Celsius (102 Fahrenheit) Wednesday afternoon. At Paris' Gare de Lyon train station, public announcements repeatedly reminded people to drink lots of water and not over-exert themselves. Paris is hosting a major international climate conference in December that will aim to curb heat-trapping greenhouse gas emissions.