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NOVA
Season 49 Episode 1: Arctic Sinkholes
In the Arctic, enormous releases of methane, a potent greenhouse gas, threaten the climate.
- Genre:
- Documentary
- Seasons:
- 53
- Episodes:
- 1029
- Cast:
- Quality:
- HD
- Duration:
- 55 min
- First Air:
- 1974
- Rating:
- 7.1
