Nathalie A. Cabrol, astrobiologist at NASA: “We are tracking extraterrestrials in their natural environment”

Tracking signs above our heads. This is the mission of Nathalie A. Cabrol, director of the Carl Sagan Center for the Study of Life in the Universe, at the Seti Institute (Search for Extraterrestrial Intelligence), an organization at non-profit which tries, as its name suggests, to detect signals from afar.