ESPAÑA: Transparent Ranking of Universities (2026) by the number of Papers in the Top 1% and Top 10% most cited papers (2021-2025) in the OpenAlex database
https://t.co/SIEdGOgaJE
For the first time, researchers have identified exactly what Roman builders were adding to their concrete to make it last for centuries....
At an unfinished building site in Pompeii, abandoned during the eruption of Mount Vesuvius in 79 AD, archaeologists uncovered something rare: Roman concrete materials that were prepared but never mixed. That frozen moment revealed how Roman builders actually made their concrete.
Instead of mixing lime and water the way we do today, they combined quicklime with volcanic ash first, then added water. The reaction produced intense heat and left behind tiny fragments of reactive lime trapped inside the hardened concrete. When cracks later formed and water seeped in, those fragments reacted again and sealed the damage from within.
In other words, some Roman concrete was intentionally engineered to heal its own cracks — and it’s still doing it nearly 2,000 years later.
Archaeological Park of Pompeii
#archaeohistories
Creo que esto pasó desapercibido para lo que puede significar.
Escanean el cerebro de una mosca (toda la topología, cada neurona con cada sinapsis), echan a andar el modelo en un entorno virtual, y el modelo se comporta como la mosca real. Siente, percibe, reacciona igual.
University of Pennsylvania researchers created ModQuad—quadrotors that dock mid-air and self-assemble into larger flying structures, then fly together as one, sharing control and stability.
🚨 The real masterminds and backstage geniuses behind the rose petals falling from the Pantheon’s oculus on Pentecost Sunday?
The Rome firefighters!
Italy at its finest 🇮🇹🔥
Today at noon thousands of red rose petals will flutter down through the oculus of the Pantheon in Rome. This spectacular tradition is held each year on the feast of Pentecost.
Comparto con @EstefMolina_ que construir resulta necesario para paliar el problema de la vivienda, y que vamos tarde.
¿Pero realmente "la escasez" de vivienda explica el boom de precios inmobiliarios que vive España y la UE? ¿En todos los países? No lo creo.
Abro debate👇