The ancient Romans had many public flush toilets, which emptied into an extensive sewage system. The primary sewer in Rome was the Cloaca Maxima; construction began on it in the sixth century BCE and it is still in use today. The oldest known constructed roadways are the stone-paved streets of the city-state of Ur, dating to circa 4,000 BCE, and timber roads leading through the swamps of Glastonbury, England, dating to around the same period. The first long-distance road, which came into use around 3,500 BCE, spanned 2,400 km from the Persian Gulf to the Mediterranean Sea, but was not paved and was only partially maintained.
- PARIS — Deep under water, the pipes and cables that carry the modern world’s lifeblood — energy and information — are out of sight and largely out of mind.
- Between the 1970s and 1990s, American terrorist Ted Kaczynski carried out a series of bombings