A new theory is stirring debate about what may lie hidden beneath one of the world’s most famous ancient landscapes.

Deep inside the forested region of Campeche, researchers studying laser-based LiDAR data noticed shapes that did not match the surrounding natural land. The scans showed clean edges, elevated ...

Picture an aircraft streaking across the sky at hundreds of miles per hour, unleashing millions of laser pulses into a dense tropical forest. The objective: map thousands of square miles, including ...