Read Previous Factly articles Article wise list of factly articles What is “Earth Hour”? What is the News? Earth Hour Day has been observed all over the world on March 27, 2021. About Earth Hour Earth Hour is a global movement for environmental conservation. The World Wide Fund for Nature (WWF) started it in 2007. … Continue reading Factly :-News Articles For UPSC Prelims | Mar 30, 2021