Bell Laboratory scientists Calvin Fuller and Gerald Pearson announced the invention of the first practical silicon-based solar cell. These cells were later displayed at the National Academy of Science Meeting. This cell was also used to power a solar-powered radio transmitter, which broadcasted this meeting. Initially, the solar cells had an efficiency of 6%, but today commercial solar panels have up to 20% efficiency. The New York Times speculated that these cells "may provide more power than all the world's coal, oil, and uranium," which excited engineers around the globe. Image: Public Domain,  https://commons.wikimedia.org/wiki/Solar_cell#/media/File:Solar_cell.png