The U.S. Geological Survey is conducting low-level airplane flights over a broad region in Missouri, Illinois, Iowa and Wisconsin to image geology using airborne geophysical technology. The survey ...

The C-17 Globemaster's unique design allows it to fly at altitudes and speeds that would cause other jets of its size to drop out of the sky.

To get the geological data, the plane flies as low as 300 feet. The plane's instruments measure the Earth’s magnetic field and naturally occurring low levels of radiation. The plane’s instruments are ...

Low, looping passes by a radiation-detecting aircraft over the San Francisco Bay Area have rattled residents already on edge ...