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Password Passed Down Before Hatching
... the egg. t's important for a Fairy-wren to recognise its own young because they are subject to parasitism by cuckoos - ... are added to the nest at a later stage than the wren's own eggs, they are therefore exposed to fewer incubation ...
Evolving Ebola
... scientists hope to figure out how to beat viruses at their own game, making us better prepared to avoid such huge death ...