Today is the 100th anniversary of the Tunguska blast, which is believed to have been the result of a comet fragment breaking up in the atmosphere with a <30 megaton yield. This impact is insignificant compared to the impact of an object several kilometers in diameter, which have a yield of tens millions of megatons of TNT.
With this in mind “saving the planet” is actually a misnomer, since it doesn’t matter how much CO2 we pump into the air, it isn’t going to destroy the planet. The Earth has been hit by a planet the size of Mars, and that didn’t destroy the planet. Humans as we are today cannot destroy the planet, the best we can do is kill ourselves off. The saying should be “save the people” since we are the ones that suffer, if the planet’s environment is damaged.
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