Scientist Pete Kelsey and his team have 3D-mapped the entire island of Alcatraz, discovering Civil War secrets, prisoner escape routes – and looking at ways to preserve the island for the future.

There is no prison more prolific than Alcatraz, so it should come as no surprise that some of its past inmates have been equally notorious. Alcatraz Penitentiary was the country's premiere maximum ...

The future of Alcatraz lies in one man’s hands. In 2023, as sea levels rose around the iconic island in San Francisco Bay, Pete Kelsey — a technologist specializing in 3D data capture — was ...