Add Yahoo as a preferred source to see more of our stories on Google. As the temperature in California's Death Valley National Park skyrocketed to a nearly world record-breaking high, a group of ...

The hot weather that has been afflicting Americans in remote national parks is also grounding emergency helicopter flights that could rescue them. That’s because helicopters can’t fly in temperatures ...

Extreme heat takes a toll on us and our environment and even in ways we don't expect, including helicopters, which can be so critical in emergencies. Temperatures have reached nearly 120 degrees in ...