A team from the University of the Philippines Los Banos has applied the Percolation Theory Hypothesis to the search for extraterrestrial life. They suggest that the growth of civilizations could be limited by the laws of physics and the carrying capacity of planetary environments. Their study indicates that intelligent life has a finite amount of time to populate the Universe and is likely to do so exponentially, depending on the type of Universe (static, dark energy-dominated, or matter-dominated).