they are tracing the route that douglas mauson took 100 years ago, studying the environmental changes in the area over the past century. the hope lies in the powerful resupply ship "aurora aust australis." they are in no immediate danger. they have weeks of supply. they are just stuck. >> parts of moscow are lit up. natural light lasts six hours and it's later in the day since the county abandoned daylight savings. many lived their lives, morning to night, in what appears to be darkness. peter sharp reports on how it's changed. >> waky, waky, it's nearly 10 o'clock. ever since the kremlin scrapped daylight saving time the people here face 18 hours of darkness a day through the winter, going without seeing a trace of blue sky or sunlight for months. for the people of moscow the daily walk to work can be depressing and dangerous experiences. carried out in almost total dark possess, crossing treacherous icy streets. then it has to be repeated again eight hours later on the way home, again in total darkness. >> it really influences people. they can get depression. statistics say that 10%

they are retracing the route that australian explorer douglas mauson took 100 years ago. studying the environmental changes of area. their best hope lies with the powerful australian resupply shape "aurora australis" spected to arrive sunday. the ship has weeks of food and supplies, but is just frozen in place. >> moscow's streets have been lit up as part of an attempt by the kremlin to shine light into people's lives. after scrapping daylight saving hours many in russia complained they lived their lives in the total darkness. peter sharp investigates. >> waky, waky, it's nearly 10 o'clock in the morning, and it could well be midnight. since the kremlin scrapped daylight saving time the people here have to face 18 hours of darkness a day through the winter. sometimes going without seeing a trace of blue sky or sunlight more months. >> for the people of moscow the walk to work can be a depressing and dangerous experience. carried out in almost total darkness, crossing treacherous icy streets, and it has to be repeated again eight hours later on the way home. again in total

they were tracing the route that australian explorer douglas mauson took 100 years ago, studying thenvironmental changes in the area. their best hope lies in a powerful australian resupply ship "aurora australis" expect to arrive on sunday. the ship has weeks of food and supply, it's just frozen in place. >> the researchers could be rescued by helicopter if the weather conditions improve. >> frustration mount a week after an ice storm shut down power in half a million homes. officials say tens of thousands may remain in the dark after the weekend is over. fights are breaking out over generators and death threats directed at power crews. 50,000 customers are without power as icy conditions frustrate line workers. tree limbs snap and fall on to power lines. >> i'm meteorologist eboni deon, we'll continue to keep the mild temperatures around for another day, before temperatures start to drop off. here is a look at chicago, where we'll see temperatures into the mid 40s. notice through the overnight hours temperatures drastically drop. they dropped below zero, and rise to 28 on sunday. th