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The world's oldest man has died. He was called Saturnino de la Fuente Garcia. He was nearly 113Saturnino was due to have a birthday party with his family in February. years old.

Saturnino used to make shoes for a job. He had a big family. He had 14 grandchildren and 22 great-grandchildren.

Saturnino held a world record for his age. But more and more people are living longer.

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Now, scientists say there might be a cure for ageingGrowing older. We all begin the process of ageing from when they are born. As children move toward adulthood, they become taller and stronger. Older adults start to become weaker..

One of these scientists has written a new book about it. He says we can use DNA to stop people getting older. They will live for longer but stay fit and healthy.

Some people think this is a bad idea. The world will become too full of people. They say there will be no end. For example: will we all live forever?

Yes! It would be amazing. We could spend more time with our grandparents. People would not get ill when they are older. Life would be much better.

No! It is dangerous to mess with nature. If we did it safely, the world would fill up with older and older people. It would be a mess!