I agree with you.
I read the report and did not attach much importance to it, because his idea of humankind migrating to other planets to escape gobal warming (70 deg C), asteroid hit ( die like dinosaurs), Uncontrollable virus causing pandemic like the bubonic plague, was too much imaginative.
I do not think that it is possible for 6 billion people to shift to moon, Mars,Jupitor etc., within 20 years.
May be a few peopel like Stephen Hawkins may adventure to do that.
I will be perfectly happy to live & die on this planet
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