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New research on Antarctica using multiple satellites has revealed that the ice loss in Antarctica is much worse than previous estimates.

>> executives also said the energy industry faces a shortage in the workforce, plus there are supply chain issues with steel and sand needed to boost production. they said opening up the spigot is at least 18 months away. john and sandra, back to you. >> sandra: chad, i spent most of my morning listening to, as much as i could, every minute until a few minutes ago of the hearing and i should not be shocked by it, the unwillingness, particularly the chair woman to actually hear what the energy executives were laying out to her, what is behind the price changes, and why sometimes the price follo...

Joining me now, commentator catherine rampell. growth is historically high. >> reporter: right. the growth numbers were great. as you pointed out, highest calendar year group since the reagan years. the quarterly growth at the end of last year was really, really strong as well. yes, there's much to celebrate there. job markets obviously doing pretty well. better than expected on the unemployment rate in any event. there's been a little bit of slowdown in hiring. yeah, there's quite a bit of good news. . >> the problem is it is tempered. it is tempered in the way people feel about it and in the...

The hour, the ice changes by the four which impacts performance. speeds can reach 80 miles an hour. of course, when you go that fast, things don't always edmonton well, as i found out while riding shotgun. >> oh, boy. to be good at this you have to be good at this you have to drive a lightweight car, that means making adjustments to make your car as light as possible. that includes tearing out the dash, the backseat and the back windshield. rear windshields are overrated anyway. >> nothing back here to protect you. >> no, we tough it out through the cold. >> reporter: the good thing is if you ...

And his buddies realized they missed dirt track racing, so to get through the quiet of winter they decided to get loud. >> a bunch of us got together and started racing with another group and then it has just been going and going and going. >> reporter: now they have eight different classes of cars. there are those with studs in them. and those without. trucks and side-by-sides also get a chance to take home the checkered flag. >> it is throttle control and trying to go as fast as you can without id >> rorter: when the temperatures plummet and the winds pick up it is also nice to have a pit cr...