Thibault Camus/Associated Press Temperatures were set to soar across Europe beginning on Wednesday, with authorities from Paris to Warsaw issuing heat alerts, canceling events and bracing for potentially record heat across the region. Meteorologists say the temperatures, a result of a warm air mass traveling north from Africa, could climb well above the typical June average to 40 degrees Celsius, or more than 104 degrees Fahrenheit, in large stretches of the continent. Heat waves like these are becoming more frequent and prolonged, with hotter temperatures appearing earlier in the season, weather experts say. Here’s what to know as the mercury rises. Exams will be postponed — and so will vacations. Governments and residents were scrambling to make preparations for the worst of the weather, expected to peak on Friday afternoon before easing over the weekend. “The whole government is mobilized,” President Emmanuel Macron told reporters on Monday as the […]