Why haven't we evolved not to age?

Why do we age? Why not evolve to be better at repairing ourselves? Also, the basis of PCR tests for Covid-19...
27 February 2021

WRINKLES

抗皱面霜真的磨破吗k?

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Good news on the Covid-19 vaccine front from the UK, why South Africa isn't using AstraZeneca's vaccine, is the Universe under threat from "strangelets", why has evolution not solved the ageing problem, why ice sticks to an empty glass, the PCR test for Covid-19, and how to stop cats killing wildlife...

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