As quoted from a recent speech, ``climate change is real, it is happening right now, it is the most urgent threat facing our entire species, and we need to work collectively together and stop procrastinating.'' Addressing climate change requires renewing several processes in diverse contexts, from food to waste disposal, from transport to heating/cooling. Many of these actions are related to the ultimate challenge for humankind, i.e., the need of clean, sustainable energy sources. It is clear that the cleanest energy source available on Earth is the Sun. Despite the huge efforts invested in this direction, solar energy production is still limited to the 8% of the global energy production.