But once one gets behind the relatively small urban core, the overall density is barely 2, 200 per square mile, less than half San Jose or Los Angeles, hardly a fifth that of Tokyo and not much more than Atlanta, the least dense major city in the world with more than 2.5 million residents.

FORBES: Megacities And The Density Delusion: Why More People Doesn't Equal More Wealth

This imperfect, if not inverse, relationship between density and wealth is widely ignored by most urban core boosters, many of whom argue that packing people together is the true key to economic growth.

FORBES: Megacities And The Density Delusion: Why More People Doesn't Equal More Wealth

Its main city, Portland, became the poster child of the "smart growth" movement by forcing up density, building an extensive light-rail system and restoring its urban core.

FORBES: New Geographer

According to a report from Korea's Money Today, the idea is to create a device for older customers that's easier to read with bigger icons and letters on its large 5-inch low res screen (as opposed to the 5-inch 1080p pixel density monsters we're now accustomed to), with a quad-core CPU pushing Android 4.1 and its Smart Stay features plus a 2, 100mAh battery.

ENGADGET: Samsung 'Baffin' pops up in FCC; reportedly mixes 5-inch WVGA display, quad-core CPU

Unlike any other asteroid known today, Vesta has an iron core surrounded by layers of mantle rock and crust, similar to Earth and Mars, preliminary gravity and density measurements suggest.

WSJ: Asteroid Vesta Gets a Close Study