This Day in History

May 22: International Day for Biological Diversity

Time Periods: 1975
Themes: Environment

In 1993, the United Nations proclaimed May 22 the International Day for Biological Diversity (IDB) to increase understanding and awareness of biodiversity issues. According to UNESCO:

Biodiversity is the living fabric of our planet. It underpins human wellbeing in the present and in the future, and its rapid decline threatens nature and people alike. The main global drivers of biodiversity loss are climate change, invasive species, over-exploitation of natural resources, pollution and urbanization.

The COVID-19 pandemic is a key example of why biodiversity is critically important. In an article we recommend from ProPublica, How Climate Change Is Contributing to Skyrocketing Rates of Infectious Disease, environmental reporter Abrahm Lustgarten explains,

The warming of the climate is one of the principal drivers of the greatest — and fastest — loss of species diversity in the history of the planet, as shifting climate patterns force species to change habitats, push them into new regions or threaten their food and water supplies. What’s known as biodiversity is critical because the natural variety of plants and animals lends each species greater resiliency against threat and together offers a delicately balanced safety net for natural systems. As diversity wanes, the balance is upset, and remaining species are both more vulnerable to human influences and, according to a landmark 2010 study in the journal Nature, more likely to pass along powerful pathogens.

Also, listen to the interview with Ed Young on Democracy Now!, “We Created the Pandemicene”: Ed Yong on How the Climate Crisis Could Spark the Next Pandemic.


This is why we have a campaign to Teach Climate Justice. We offer free lessons and recommendations of books, films, and readings for K-12 classrooms.

Teach Climate Justice Banner (Wide) | Zinn Education Project

Young people around the world are organizing to demand an end to the policies and practices that are causing climate change, such as Zenile Ngcame of Masiphumelele High School and her peers who protested for action against climate change outside Parliament in Cape Town in 2019.

2019 #ClimateStrike protest in South Africa. Photo by Ashraf Hendricks

Find classroom resources below.