ABSTRACT
Solar energy is not like any other energy! The Sun plays a central role in our existence: the Sun heats the globe to an acceptable temperature; otherwise, thanks to geothermal effects, it would be just a bit more than the −270°C prevailing in the Universe. And the Sun is at the origin of life. Photosynthesis, a highly complex quantum process that involves four photons hitting a molecule at the same time, is the source of life. And that is not even acknowledging the fact that to begin with there was no free oxygen at all in Earth’s atmosphere: all the oxygen we breathe today has at some point been liberated through photosynthesis.
