
Firstly, surgeons will be able to replace every part of human body so people will live longer.

Twenty years from now there will be many changes in medicine, technology and in environment. The famous "tree of life" sketch dates to the summer of 1837 when Darwin had recently returned from his trip on board HMS Beagle, more than 20 years before the publication of "On the Origin of Species. In 30 years, most of the world’s largest economies will be those that are emerging today, surpassing current behemoths such as the US, Japan and Germany. An Essay: Twenty years from now, the world will be a better place to live in People are always looking for new ways to improve their life. Stuart Roberts / Cambridge University Library “They may be tiny, just the size of postcards, but the notebooks’ impact on the history of science, and their importance to our world-class collections here, cannot be overstated.” The notebooks, which were wrapped together in plastic, were left on the floor outside the librarian’s office. There was no clue as to who returned the books, just a message inside a brown envelope that read: "Librarian, Happy Easter X"“My sense of relief at the notebooks’ safe return is profound and almost impossible to adequately express," Cambridge University Librarian Jessica Gardner said. "Along with so many others all across the world, I was heartbroken to learn of their loss and my joy at their return is immense" said Cambridge University Librarian Jessica Gardner. Wrapped in plastic and left in a bright pink gift bag, with no obvious signs of damage, they were left outside the librarian’s office on the fourth floor of the grand 17-story library building, the university said in a statement Tuesday. And to the astonishment of staff at the university's library, on March 9, the notebooks were returned.
