(sources of information for the various terms listed in the Index of Scientific and Technological Topics)

(concern over the environmental impact of burning fossil fuels has resulted in looking for alternative fuels that are less polluting)

(many words in English come from a variety of foreign sources)

(here are 14 important words with elements from Latin and Greek sources)

(bibliographic sources of information from which words and topics have been compiled about scientific and technological topics)

(bibliographic sources of information from which words and sentences have been compiled about words and expressions English speakers should know for better understanding and communication)

(engineering is the technical science in which properties of matter and the sources of power in nature are made useful to people; such as, in structures, devices, machines, and products)