The size of the dose, though variable, is thus the maximum that will benefit any given embryo, so the mother is not so much discriminating among her offspring as trying to do the best by each of them.

ECONOMIST: Animal behaviour

Unfortunately, this kind of investment generally takes much longer to yield a return, and is not nearly as likely to do so as the others.

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That has led, over a long period of time, to far better cure and survival rates for cancer, for heart disease, than we have in Britain and ultimately we have to not worry so much about the system as do we actually give people in Britain the health care we deserve, and that's what I want to see.

BBC: News | BREAKFAST WITH FROST | Interview with shadow health secretary Liam Fox