The invention of blue light in LED lights used in many modern-day electronics has changed the world profoundly. Many scientists praise this new energy-efficient light source for reducing carbon dioxide emissions, which are said to contribute to global warming.

The 1990s were a big decade for the advancement of artificial light. A group of Japanese scientists are credited for producing the first energy-efficient form of blue light LED that is used in almost every electronic device across the globe.

Often, scientists mimic the most notable inventions, starting in the natural world. An example of this is blue light from the sun. This naturally occurring wavelength is part of what makes up the electromagnetic light spectrum.

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