Self-healing concrete? Buried Pompeii site reveals secret behind Rome's enduring structures

Archaeologists excavating a Pompeii site uncovered the secret behind the longevity of ancient Roman structures: a unique concrete mixture that could chemically repair itself over time.A recent study, which was published in the journal Nature Communications earlier in December, centered around a construction site that was abandoned after the eruption of Mount Vesuvius in 79 AD.The construction site was buried under volcanic ash, which preserved it for nearly 2,000 years. Archaeologists found room