It's freezing cold and you've lost power. Here's what emergency doctors want you to do

Freezing temperatures and long-term power outages can quickly create dangerous health situations. The indoor risk of hypothermia and frostbite are especially a concern in areas where the infrastructure isn't built for wintry weather and people aren't as used to it. Here are tips from emergency room doctors on how to stay safe. What are the signs of hypothermia?