Dogs trained to detect COVID-19,
The International Day for Biological Diversity
(or World Biodiversity Day) is a United Nations–sanctioned
It is currently held on May 22.
World Book Day, also known as World Book and Copyright Day, or International Day of the Book, is an annual event organized by the United Nations Educational, Scientific and Cultural Organization (UNESCO) to promote reading, publishing, and copyright. The first World Book Day was celebrated on 23 April in 1995, and continues to be recognized on that day.
Information courtesy- Wikipedia.