Temperatures were below the freezing mark in 85 percent of the country, excluding Alaska and Hawaii
Weather tracker: freezing conditions sweep south across US
How to stay safe as it gets really cold in the northern U.S. : NPR
Climate change: Why we still have extreme cold despite global
Scientists Finally Figure Out Why You Get Sick in Cold Weather
Does Cold Weather Affect Back Pain? The Spine Clinic Advice
What Misery? It's The Least Snowy, Cold Start To Winter, So Far
Cold nose: Causes, symptoms, and how to get warm
Death Toll Reaches 11 as US Suffers Record Cold
Migraine: What It Is, Types, Causes, Symptoms & Treatments
Why Knee & Joint Pain Increase When It's Cold
Historic heat to extreme chill: why is the US experiencing a cold
Why do I feel so cold all the time? - Harvard Health
When and Why to Apply Cold to an Arthritic Joint
Common Winter Illnesses in Kids - Children's Health
