Sapphires form inside volcanoes, not deep in the mantle

Amazing answers to your curious questions

From strange lights in the sky to rocks that spontaneously glide across the ground, the mysteries scientists are trying to finally crack

GLOBAL EYE

A JOURNEY ACROSS SICILY REVEALS THE ESSENCE OF AN ISLAND SHAPED BY OUTSIDERS, WHERE SUCCESSIVE WAVES OF IMMIGRATION OVER THE CENTURIES HAVE CREATED A UNIQUE CULTURAL IDENTITY

In a region shaped by its volcanic heritage, a few big names dominate the wine scene, but Campania has so much more to offer in terms of grapes and wine styles that can only be found here

From colliding galaxies to supermassive black holes, we take a look at some of the strangest sights in the universe