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40,000 BCE
fire
The earliest evidence of human use of fire comes from several archaeological sites in East Africa, including Chesowanja near Lake Baringo, Koobi Fora and Olorgesailie in Kenya. The evidence found at Chesowanja consists of red clay fragments dating back 1.42 million years. It is used for cooking and to scare away predators. -
windmil
How does a wind turbine work?
Through a wind turbine that transforms the kinetic energy of air currents into electrical energy. The extraction process is carried out mainly thanks to the rotor, which transforms kinetic energy into mechanical energy, and the generator, which transforms said mechanical energy into electrical energy. Charles Francis Brush was an American scientist who built the first self-operating wind turbine to generate electricity in 1887. -
solar panels
Solar panels are the intermediary that makes sunlight serve as energy for us. Their design is simple, very effective and allows self-consumption, which promotes sustainability. German physicist Charles Fritts created a device that used thin layers of selenium to absorb sunlight and convert it into electricity