ST. LOUIS — There is a reason that Missouri is known as the Cave State. There are thousands of sinkholes and caves. Many of them are formed when limestone rock is washed away by groundwater. … ...

The Missouri Geological Survey is flying specially equipped helicopters over Clark, Scotland and Schuyler counties. These aircraft will carry large hexagonal sensors suspended 100 feet below them.

The latest drought monitor map released by the University of Nebraska on Thursday shows that while parts of southeast and mid-Missouri remain "abnormally dry," they have improved since Gov. Mike ...

People south of Interstate 70 may see planes flying at a low altitude. It’s part of the United States Geological Survey’s project to map parts of Missouri, Kansas, and Arkansas.

As the state’s experts in geology and geosciences, the Missouri Geological Survey oversees the state’s mineral production and develops maps, reports and data to help the state manage its ...

Nearly two dozen state geological surveys depend heavily on federal funds. A proposed budget cut could slow or stop key geologic mapping work. By Rebecca Dzombak Every spring for the last 31 years ...