None of us are getting any younger. The problem is, a lot of us are getting older at the same time, hence the urgent need to find ways to cope with a population that will find living to 100 as unremarkable as we find people living into their 80s. Our cover feature explores how engineers are waking up to the implications - and the opportunities - this will bring. In an era where many people are old, anything that is engineered will have to take account of the fact.
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