Before joining WWF in 2003, he was on the academic staff at the International Institute for Wildlife Conservation and Management, based at the National University of Costa Rica. He headed up WWF´s marine work in Latin America until 2009, including the conservation of marine turtles, whales and dolphins, fisheries, and marine habitats.
His recent publications address the link between biodiversity and society, including attitudes and practices toward nature in Central America, the economics of marine turtle consumption and conservation, a concept and methodology for species conservation with a livelihoods focus and, more recently, adaptation to climate change. He currently leads WWF´s efforts to save elephants, rhinos, great apes, pandas, polar bears, tigers, sea turtles and cetaceans from extinction. An avid runner, Carlos lives in Switzerland, drinks lots of tea, and is fond of Asian cuisine.