António Guterres est un homme d’état portugais. Il est secrétaire général des Nations Unies depuis le 1er janvier 2017. Wikipedia
Résultats pour:
Douglas Boyes
2021
LEDs used in streetlights typically emit white light, while sodium lamps have a characteristic yellow glow – as seen in the picture below. This change in the colour of artificial light is predicted to have major consequences for wildlife.