Large forest fires are currently raging in North America, and there are many of them. They are threatening towns and villages, and many people have to be evacuated. High temperatures are forecast in some places for the coming days.    High temperatures of up to 40 °C are causing a critical forest fire situation in North America. California, USA, and Alberta, Canada are particularly affected.    Winds drive forest fires in the US and Canada    Winds from the west are driving the fires. They carry sparks and burning material, causing ...