Japanese authorities urge evacuation as a massive sinkhole in Saitama grows, hampering rescue efforts to free an elderly truck driver.

Emergency workers in Japan began building a ramp on Friday (Jan 31) to try and reach a 74-year-old truck driver who has not been heard from since his vehicle was swallowed by a sinkhole this week.

The median age of Arizonans has only been increasing over the past decade. Here's which counties are the oldest and youngest in the state.