00:00kingdom. When he died around the year 2560 before Christ, his people raised him a tomb that would
00:07remain the tallest structure built by human hands for nearly 4,000 years. The Great Pyramid of Giza
00:13stands 146 meters tall, its base covering 13 acres, its core holding an estimated 2.3 million
00:21blocks of limestone, each weighing as much as a car. Its four sides are aligned to true north
00:27within 360th of a degree, a precision that still embarrasses modern surveyors. And yet in the year
00:332015, a team of physicists walked up to it with a radical idea. They would not dig.
