BIO-PRINTING It is already possible to 'print' three-dimensional objects out of plastic and metal using a 3-D printer. Now (1) scientists are developing printers that will be able to print human organs and body parts. If they are successful, doctors could save millions of lives. At the moment, scientists are able to print human tissue and bone, but the printing of whole organs will probably be a reality by 2025. Doctors are certain that bio-printing (2) the treatment of cancer and heart disease. Moreover, if we can produce organs such as hearts and kidneys, patients (3) while they're waiting for an organ donor. The technology is very expensive and the cost might not come down for a while. But when it does, bio-printing could play an important part in all our lives. How will the human body have changed in 100,000 years? That was the question artist Nickolay Lamm asked genetics expert Dr Alan Kwan. After their discussion, Mr Lamm came up (4) some interesting predictions. In the distant future: • Humans will be living in other parts of the solar system. As a result, our eyelids will have become thicker to protect our eyes from radiation. • Our (5) will have grown larger to cope with less oxygen in other atmospheres. • The size of our skull will have increased because our brain will have got larger. • We will be using a nano-chip inside our head to receive images and sound for entertainment and (6).