The people that study ruins are archaeologist.
Archaeologist
study written records
The study of laughter is called Gelotology.
orntology .
Everybody studies science -- science is what you call learning about how things work, and we all do that during our lives. People who study science as a career are called scientists.
That person is called an archaeologist. They study human history and prehistory through the excavation of sites and analysis of artifacts.
People who study pathology are called pathologists.
People who study psychology are called psychologists.
ruins mostly.
An archaeologist is the person who digs up ruins to study the past.
People who study bats are called chiropterologists.
Demographers.
Zoologists.
Hemographers
Observant.
pharmacologists
dictoneran