A study led by Leonard O. Ohenhen indicates rapid land subsidence on the U.S. East Coast.

Cities like Norfolk, Virginia Beach, Baltimore, and parts of New York City are significantly at risk.

Around 2.1 million people and 867,000 properties are already affected.

The subsidence is due to groundwater extraction and sediment compaction.

Virginia Tech and U.S. Geological Survey's research confirms these findings.

They used satellite data to create high-resolution maps pinpointing areas at risk.

This data is crucial for risk mitigation and protecting the East Coast.