An international study has found that life expectancy worldwide has jumped by more than 6 years since 1990. The comprehensive survey of data from 188 countries found that while people are living longer, even in some of the poorest countries, how healthy our extended lives will be remains a challenge.
It's easy to imagine bionic sight as crystal clear and even enhanced, like the augmented body parts in science fiction. But the reality could be very, very different for a typical bionic eye recipient. Researchers at the University of Washington developed visual simulations that indicate what the world might look like to people with retinal implants. The resulting images are, in a word, blurry.