Sunday, 27 December 2020

¿Cuánta inmunidad de rebaño es necesaria?


By BY DONALD G. MCNEIL JR. from NYT en Español https://ift.tt/2MdG1Qf
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Deadly fire at Canada military base moved a kilometre 'in 30 to 60 seconds'

The blaze that killed four men and injured dozens of others spread with alarming speed, accounts suggest. from BBC News https://ift.tt/8s...