Local maintenance crews are dumping dry ice in the pesky rodents’ burrows in the trendy Lower Manhattan neighborhood so that when it melts, it leaves behind carbon dioxide, which suffocates them. …Dry ice does not melt; it sublimates, i.e. turns from solid into gas while bypassing the liquid phase. FTR, liquid CO2 can only exist at a minimum pressure of 5.1 atmospheres.
They are simply “sequestering” CO2 gas in rodent holes. It is perfectly acceptable and environmentally sound to pump CO2 into the ground. Just ask John Kerry. Now maybe they could get creative and sequester some of that stuff somewhere else where it would do some good?