It's amazing what scientists can do when it comes to gene therapy. A recent study successfully reversed deafness in mice.
Researchers created a synthetic virus that injected new genes into the ear cells of deaf mice. The mice's deafness was caused by sound-sensing hairs growing in the wrong pattern. But the new genes carried instructions to correct this pattern, meaning the mice could hear again.
The treatment sounds promising, but we should be cautious. It only corrects one type of deafness, and will need lots of testing to make it safe for humans.