Enric Sala

I dream of diving in two places where I have not been yet. One is Antarctica, because of its crystal clear waters and amazing fauna, in addition to the ice cathedrals. The other is the Arctic, where I'd like to see the northernmost kelp forests.

The Ocean Health Index is like the thermometer of the ocean. It will allow us to take the temperature to know what is going on at the global level, trying to integrate different impacts, including overfishing, invasive species, coastal development, and climate change.

By irreducibly complex I mean a single system composed of several well-matched, interacting parts that contribute to the basic function, wherein the removal of any one of the parts causes the system to effectively cease functioning.

NASA's Office of Commercial Exploration has been concerned about protecting the landing zones where humans first walked on the Moon, and one of my colleagues, ecologist Margaret Race, has been part of their deliberations.