In 2006, the Carabinieri, Italy’s national military police, raised the alarm about illegal digging in a forest of oaks and chestnuts near Vetralla, in the province of Viterbo, north of Rome. The Soprintendenza, the state body in charge of archaeology in the region, sent a team to the site for an emergency excavation in May […]

If matter and antimatter had come out of the Big Bang in equal amounts, there would be no stars today. Every particle has an antimatter twin with the opposite electric charge, and when the two meet, both vanish in a burst of energy. A perfect balance would have left a universe of pure light, with […]