1970
First Earth Day observed: Millions of people across the United States took part in the inaugural Earth Day, giving momentum to the global environmental movement.
1915
Second Battle of Ypres begins:...
The National Science Centre, Delhi, will mark World Earth Day 2026 on April 22 with a special programme dedicated to environmental awareness and scientific...
A two-day workshop on “Heritage of Ancient Writing Traditions in the Western Himalaya—Conservation of Scripts and Manuscripts of Himachal Pradesh” was inaugurated at the...