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The crew-2's two astronauts who stay are preparing for upgrading the station. Which requires spacewalks to replace the older equipment.

With temperatures 24 below zero, places like chicago. then by the ends of the week the second half of the week, we start to see those cold temperatures filter into the northeast. new york city, your high will only be in the 20s by friday. if you are ringing in the new year, here in time's square, temperatures around 89:00 will be at 36, 32 when we ring in the new year, but when you factor in that wind chill, it's going to feel like 14 in time's square and across the rest of the country, we'll see those temperatures look like 34 in kansas city, memphis and these are temperatures, of course, whe...

The olympics in the meantime are over. team usa returning from london feeling golden. here is a look at the final medal count. the u.s. wins the most medals as well as the most gold medals in any games since 1904. swimmer michael phelps ending his olympic career on top, winning more medals than any other athlete. overall the u.s. won medals in 21 different sports, the most of any nation. go usa. jenna: our eyes were focused on the olympics in great britain. nine out of 10 people watch the at least some olympic coverage. the closing ceremony, had 26 million viewers in the u.k. nbc said their to...

Of how the universe works. carol? >> cool. john zarrella live in florida. thanks so much. cnn is your coverage set for 3:30 p.m. eastern this afternoon. and on cnn, chief medical correspondent, sanjay gupta, meets the doctors credited for saving the life of gabrielle giffords. that's sunday night, may 8th, at 7:00 eastern. millions of people watched william and kate say there i dos. how did she keep that hat on her head, i'm wondering. >> carol, so many hats, so little time. we need to talk about why hats and who wore what and what was in and what was out. that's next here on cnn. [ cellph...