Winter Could Be Worst in 25 Years for USA...
CHILL MAP...
3 Deaths Due To Cold in Memphis...
Vermont sets 'all-time record for one snowstorm'...
Iowa temps 'a solid 30 degrees below normal'...
Seoul buried in heaviest snowfall in 70 years...
Historic ice build-up shuts down NJ nuclear power plant...
Beijing -- coldest in 40 years...
Miami shivers from coldest weather in decade...