Wrapped in warm sweaters and kitted out in hiking boots, the small group chatted and laughed before setting out on an ...

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.

Sinkholes are surprisingly selective. They require the right rock, the right water chemistry, the right underground space and ...