The mysterious seismic pulse that repeats every 26 seconds, coming from the Gulf of Guinea

Seismic detectors around the world have been capturing a curious and strange phenomenon for decades. Every 26 seconds the earth…

Abram Gannibal, the African slave who became a military engineer, general of the Russian army and great-grandfather of the writer Alexander Pushkin

There is an episode from the eighteenth century that in a way seems to come from a work of fiction:…

The mystery of the disappearance of the most valuable medicinal plant from antiquity

The ancient Greek city of Cyrene (in present-day Libya), where Eratosthenes was born, was founded by settlers from Thera (Santorini)…