The Egyptian pyramids remain one of history’s greatest engineering achievements. This video explores how ancient builders may have transported massive stone blocks, aligned structures with precision, ...

The National Academies of Sciences, Engineering, and Medicine are private, nonprofit institutions that provide expert advice on some of the most pressing challenges facing the nation and world. Our ...

At the beginning of the 21st century, the National Academy of Engineering published a report identifying the 20 greatest engineering achievements of the 20th century. 1,2 These engineering ...