ctN11.7 million yrsInquiry into the prehistory control and use of fire
ctN212000 BCExamination of fire as the hearth and religious focus of early cities
ctN33500 BCLearning about the earliest uses of coal in society
ctN4400 BCLearning about ancient city thermodynamic processes (e.g., Rome)
ctN51780 ADInquiry into the nature of the steam engine
ctN61850 ADExamination of the uses and deployment of oil