Complex sentence: He went on to study environmental engineering science under Howard T. Odum at the University of Florida's Center for Wetlands, receiving his Ph.D in 1998 with a dissertation entitled "Limestone wetland mesocosm for recycling saline wastewater in Coastal Yucatan, Mexico".
Split into simpler sentences: He went on to study environmental engineering science under Howard T. Odum at the University of Florida's Center for Wetlands. He received his PhD in 1998 with a dissertation entitled "Limestone wetland mesocosm for recycling saline wastewater in Coastal Yucatan, Mexico".