Arctic Sinkholes
An investigation of explosions in Siberia and other evidence that melting soil in the Arctic is releasing vast amounts of methane, a potent greenhouse gas.
Sydney TV Guide 
Sunday 01 Dec
- 8:20 - 9:20 pm
An investigation of explosions in Siberia and other evidence that melting soil in the Arctic is releasing vast amounts of methane, a potent greenhouse gas.
