Complex sentence: Filmed during the Antarctic summer temperatures on location are still reported to have been around 32ºF and windchill bringing it to about 0ºF, and because of the cold she could not film for more than a minute at a time before being warmed again.
Split into simpler sentences: Filmed during the Antarctic summer, temperatures on location are reported to have been around 32ºF with windchill bringing it to about 0ºF. Because of the cold she could not film for more than a minute at a time before being warmed again.