If these are truly explosions ejecting many tons of earth out of these holes, wouldn't they be detected by seismographs around the world, or at least in Russia? I think they should plant seismic detectors in the area so they can immediately detect the next explosion and quickly send a research team to site.
Yes, if there had been a large explosion, even if it was not combustion, that amount of earth moving would have been measurable by seismic instruments thousands of miles away. Quarry explosions have been known to display as earthquakes as large as 2.7 on the Richter scale and felt for hundreds of miles, and those would pale in comparison to the amount of earth movement involved in the Siberian craters. It is much more likely that they escaping gas just gradually caused sinkholes, which would still create seismic events, but would be more likely many smaller ones and probably would not pick up on instruments unless they were within 100 miles.
MS could give a full free ride including rent, food, and gas to a good number of students every single year and it would be the rounding error on their earnings.
And if they tied that education to a job at Microsoft, they would come out ahead, even if they paid industry standard wages.
Tobacco company execs should be publicly flogged. Goodbye old friend.
Optionally, we can inundate everybody's daily lives with constant reminders of the health hazards of smoking, including the second hand smoke deaths, breathing through stoma and hundreds of other daily images of how horrible smoking is. Then NOBODY will ever even CONSIDER smoking./sarcasm.
You knew the job was dangerous when you took it, Fred. -- Superchicken