4 ms·
https://sci-hub.tw/https://doi.org/10.1038/19368 https://sci-hub.tw/https://doi.org/10.1038/19368 It looks more like several billion, not several trillion.
by Forbo 7y ago
https://sci-hub.tw/https://doi.org/10.1038/19368 https://sci-hub.tw/https://doi.org/10.1038/19368
It looks more like several billion, not several trillion.