Fernando Valladares (Mar de Plata, Argentina – 1965) holds a PhD in Biological Sciences from the Universidad Complutense de Madrid and is currently an associate professor at the Universidad Rey Juan Carlos de Madrid and a research professor at the Centro Superior de Investigaciones Científicas (CSIC), where he directs the Ecology and Global Change Group. His research has mainly focused on changes experienced by terrestrial ecosystems, and on mechanisms of tolerance and survival to extreme environmental conditions. Beyond his numerous scientific contributions, for the last two decades he has collaborated with media outlets with the aim of publicly warning about the multiple risks associated to the climate crisis, the loss of biodiversity and some other impeding environmental affairs and risks. In 2021 he received the BBVA Foundation Award for biodiversity conservation.