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Ancient Roman concrete could self-heal thanks to “hot mixing” with quicklime
The famous Pantheon in Rome boasts the world's largest unreinforced concrete dome—an architectural marvel that has endured for millennia, thanks to the incredible durability of ancient Roman concrete. For decades, scientists have been trying to determine precisely what makes the material so durable.
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Caravaggio Was the Other Michelangelo of the Renaissance
Both artists were named after the archangel Michael, who cast out the rebel spirits from Heaven. Michelangelo typified the archangel’s immaculate tendency, a model for all artists to follow. Caravaggio tended to the saint’s violent strain, a virtuosic painter, but no angel.