The invention of the electric light changed the lives of millions of people. It led to safer working conditions and better educational environments, improved healthcare and economic growth, throughout the 20th century. We now stand on the threshold of a new lighting revolution.
Vertical farming is a new sustainable farming concept that has received much hype. Transforming dilapidated warehouses and factories into urban farms to grow salads and vegetables has generated much interest, most notably in Japan and the United States.
Following up on the International Year of Light in 2015, the UN has declared 16 May as the International Day of Light. This date commemorates the first discharge of a laser in 1960 by the physicist Theodore Maiman.