technology

technology, the application of scientific knowledge to the practical aims of human life—or, as it is sometimes phrased, to the change and manipulation of the human environment.

The word technology is a combination of the Greek technē, which means “art, craft,” and logos, which means “word, speech.” It first appeared in English in the 17th century, and it has evolved through several meanings to its present-day sense.

Technology is a vast and sprawling subject treated across articles too numerous to list here. What follows is a highly selective list of examples of how technology has changed our world—and how, in the 21st century, the speed of its development has only accelerated.

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• For a general overview of what counts as technology from the ancient world to the 21st century, see history of technology.
• Do you know what an elastomer is? Think rubber—a crucially important technology.
• Coal mining, coal utilization, petroleum production, petroleum refining, and nuclear power: all of these articles, and many more, explain how technology is used to generate energy.
• Technology is essential to the production of food. Learn more about the origins of agriculture, commercial fishing, dairy farming, fruit farming, intensive animal farming, livestock farming, poultry farming, and vegetable farming. Almost everything we humans consume is made possible by technology, from coffee and tea to ultra-processed foods and soft drinks.
• How are stone tools, the Bessemer process, and the Apple II personal computer related? They’re all technological inventions that have changed our world.
• Construction technology has transformed Earth for thousands of years through bridges, canals and inland waterways, dams, harbors and sea works, lighthouses, skyscrapers, roads and highways, and tunnels and underground excavations. Engineered materials such as cement and steel have made bigger and stronger versions of these structures possible over time.
• Technology enables us to drive, fly, and sail around the world—and to leave Earth behind.
• The Internet might be today’s most important communications technology (specifically, it’s a system architecture), but telecommunication and telecommunications media have a long history. Don’t forget that telephones, photography, printing, and paper are forms of communication technology just like smartphones and messaging apps.
• Pop music has been dependent on technological advances, from phonographs to Auto-Tune.
• Because nanotechnology operates at the scale of atoms, its possibilities are vast.
• Manufacturing industries produce just about everything, from semiconductors to fast fashion, using traditional process as well as newer ones, including 3D printing.
• The pharmaceutical industry harnesses technology to move the history of medicine forward.
• The development of artificial intelligence has been advanced through machine learning, natural language processing, and large language models, and it is the foundation for numerous technological innovations, including autonomous vehicles and virtual assistants and agents.
• Engineering is, arguably, the practice of technology. It can take many forms: aerospace engineering, chemical engineering, civil engineering, electrical and electronics engineering, humanitarian engineering, military engineering, nuclear engineering, petroleum engineering, and tissue engineering are just a few examples.