“In 10 or 20 years we will be dying from infections of bacteria resistant to antibiotics,” says the geneticist Edith Heard. The World Health Organization (WHO) has been warning for years about the plague of microorganisms that evade existing drugs and will kill 10 million people around the world each year, more than those who die from cancer. In this battle of gigantic dimensions, César de la Fuente, Princess of Girona award scientific research and professor of bioengineering at the University of Pennsylvania (USA). Its weapons are artificial intelligence and the experience of its research team, Machine Biology, capable of detecting thousands of molecules with antibacterial potential. They look for them in natural compounds, such as wasp venom, or in the body's general protein map. And, now, in our Neanderthal and Denisovan ancestors, which have served to “resurrect” molecules lost by the Homo sapiens in its evolution.