Rachael Stevens explains how Retinitis Pigmentosa effects her and how she is "extraordinarily excited" by the breakthrough in research.
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Four "siblings" of Dolly the sheep are in good health, raising hopes that the cloning process does not affect physical well-being.
A mother whose young son died from sepsis has convinced the health secretary to start an awareness campaign about the illness.
The pair discussed Peake's safe return from space and helping disadvantaged young people.