Space X recently launched another rocket from California carrying satellites into space - accelerating interest by more businesses and research facilities that now view space as an opportunity. At this year's Milken Institute Global Conference, those in the space business describe why orbiting the Earth is so exciting. VOA's Elizabeth Lee has details from Los Angeles.
Smog, industrial waste and contaminated water are just a few of the environmental problems facing many of the biggest cities today. But there is another type of pollution that's becoming increasingly prevalent in our cities: noise pollution. Medical experts say people exposed to constant noise can suffer from a variety of psychological and physical ailments. As Saleem Shayan reports, it's a particularly serious problem in megacities like Karachi in Pakistan where noise is a constant companion.