In life there is only one certainty br and that is one day we will die, br it is only a question of br how and when that remains a mystery. br Scientist the whole world over br would love to find the solution br that could extend our lives, br letting us live longer br yet remain in good health. br As the population now br is living longer with each passing year. br Four hundred years ago br if you were forty you were old, br but now at forty we are still young. br In another four hundred years, br people who are one hundred br may be classed as being young. br The world can only wait and see.