In the years after World War II, neutral, peace-loving Sweden embarked on an ambitious plan – build its own atomic bomb Article 16 votes
China's ancient water pipe networks show they were a communal effort with no evidence of a centralized state authority Article 880 words 36 votes
The Barbegal Aqueduct included a watermill complex with water cascading through a total of sixteen wheels. It may have been "the greatest known concentration of mechanical power in the ancient world" Article 823 words 13 votes
The filing cabinet was critical to the information infrastructure of the 20th-century. Like most infrastructure, it was usually overlooked. Article 3354 words 10 votes