20minutosAlexandre Olmos, doctor: "If you wake up between 2 and 4 in the morning, it's for this reason."
20minutosViruses as therapy: This is the revolutionary Spanish treatment that seeks to use the common cold to combat brain cancer.
EL PAÍSWithout hierarchies, males, or queen: the unprecedented matriarchy of a bee "commune" in the Costa Rican jungle