Three physicists have been awarded the Nobel Prize for changing the way the world is lit _1_.
Isamu Akasaki and Hiroshi Amano of Japan and U.S. scientist Shuji Nakamura were _2_ by the committee of the Royal Swedish Academy of Sciences to share the $1.1 million prize.
The _3_ created the first blue LED lights that now light up everything from our homes to our mobile phones. LED lights save on energy, can last as much as 100 times as long _4_ standard bulbs and are environmentally-friendly because they _5_ contain mercury.
The professors made the first blue LEDs in the early 1990s. Red and green versions had been around for years, but it was only the _6_ of the blue LED that allowed white lights to be created. These white lights now _7_ our world.
The first Nobel prizes were awarded _8_ 1901 to honour achievements in science, literature and peace in accordance with the will of dynamite inventor and business tycoon Alfred Nobel. Albert Einstein, Niels Bohr and Marie Curie are all _9_ winners of the prize.
Now choose the correct missing words to complete the text:
