Photo by Tom Sawyer Drag and drop Form builder for Android device lets users with no programming skills create apps. App development for mobile devices is surging, like lines of surfers picking up big sets of waves.Economists are beginning to notice "the app economy," saying that it is now responsible for 466,000 jobs in the U.S., up from zero in 2007 when the iPhone was introduced, according to a report published on Feb. 7 by TechNet. The report is based on research by Michael Mandel of South Mountain Economics LLC, a consulting firm that tracks the impact of innovation and
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.