On December 31, 1879, Thomas Edison made the first public demonstration of electric light. With many observers on hand, Edison lit up the streets and buildings around his laboratory in Menlo Park, New Jersey. Although widely credited with inventing the light bulb, Edison improved upon existing designs to create the first practical electric lighting system.

By developing long-lasting light bulbs and helping to establish electrical grids, Edison revolutionized the world’s use of energy. While electricity powers many of our technologies, it is mostly produced from non-renewable resources such as coal. These non-renewable energy sources contribute to pollution and climate change.


gradual changes in all the interconnected weather elements on our planet.

electrical grid

network of cables or other devices through which electricity is delivered to consumers. Also called a power grid.


set of physical phenomena associated with the presence and flow of electric charge.


place where scientific experiments are performed. Also called a lab.


introduction of harmful materials into the environment.

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