ST. LOUIS — Experts are warning that dangerously high temperatures are headed to the Greater St. Louis area over the next week. With Fourth of July celebrations and World Cup events in full swing, the American Red Cross urges everyone to take three critical actions to stay safe:Stay hydrated by drinking a cup of water every 20 minutes, even if you don’t feel thirsty. Avoid sugary, caffeinated and alcoholic drinks.Stay cool by spending time in air-conditioned places. If your home is t...