Portion of Florida known as 'sinkhole alley' is where two best friends died. Why?

You trust the road beneath your tires. But what if that trust is misplaced? Sinkholes are increasingly turning ordinary streets into danger zones. And the cost of ignoring them is skyrocketing.

Two tourists got the shock of their lives on Sunday when their rental car was swallowed by a sinkhole in Adelaide. The Darwin ...