• 1 Free to use
• 2 Public domain image
• 3 Free to use: Christopher Columbus (1451–1506). Epistola Christofori Colom (Letters of Christopher Columbus). Rome: Stephan Plannck, after April 29,1493. Rare Book and Special Collections Division, Library of Congress (048.00.00, 048.00.01, 048.00.02, 048.00.03)
• 4 Wikimedia Commons/Free to use
• 5 Free to use
• 6 Johan Herman Isings/Free to use
• 7 16th Century Painting  Depicting El Indio Enriquillo
• 8 Public domain image
• 9 Wikimedia Commons/Free to use
• 10 Public domain image
• 11 M0003525: Newspaper cutting of the landscape of potteries amongst factories. Source: Wellcome Collection
• 12 Robert H. Thurston/Free to use
• 13 Public domain image
• 14 Public domain image
• 15 Public domain image
• 16 Boston Public Library/Unsplash/Free to use
• 17 Free to use
• 18 Free to use
• 19 Wikimedia Commons/Free to use
• 20 Wikimedia Commons/Free to use
• 21 Public domain image
• 22 Public domain image
• 23 Free to use/Source: Kheel Center
• 24 Wikimedia Commons/Free to use
• 25 Wikimedia Commons/Free to use
• 26 Wikimedia Commons/Free to use
• 27 Wikimedia Commons/Free to use
• 28 Wikimedia Commons/Public domain
• 29 Freepik/Free to use
• 30 Pexels/Free to use
• 31 Youth for a Better World, Inc. D/B/A Montessori Model United Nations
• 32 UN Photo/CC0I
• 33 Generated with AI
• 34 Wikimedia Commons/Public domain
• 35 Public domain image
• 36 Public domain image
• 37 AMI
• 38 Public domain image/1953 Iran coup
• 39 Unseen Histories/Unsplash/Free to use
• 40 Konstant Loubier/Unsplash/Free to use
• 41 American Public Power Association/Unplash/Free to use
• 42 Michel Isamuna/Unsplash/Free to use
• 43 Pixabay/Free to use
• 44 Wikimedia Commons/Free to use 45 Public domain
• 46 Creative Commons
• 47 Freepik/Free to use
• 48 Wikimedia Commons/Free to use
• 49 Freepik/Free to use
• 50 Freepik/Free to use
• 51 Ella Ivanescu/Unpsplash/Free to use
• 52 Freepik/Free to use
• 53 Wikimedia Commons/Public domain
• 54 Intergovernmental Panel on Climate Change/Public domain
• 55 Office of the United Nations High Commissioner for Human Rights/Public domain
• 56 Wikimedia Commons/Free to use
• 57 Brice Cooper/Unsplash/Free to use
• 58 Wikimedia Commons/Free to use
• 59 Freepik/Free to use
• 60 Wikimedia Commons/Free to use
• 61 Markus Spiske/Unsplash/Free to use
• 62 Freepik/Free to use
• 63 Staff Sgt. Christopher Willis/Wikimedia Commons/Public domain  64 NASA/GSFC/LaRC/JPL, MISR Team
• 65 United Nations
• 66 Generated with AI
• 67 Wikimedia Commons/Free to use
• 68 Mirna Wabi-Sabi/Unpsplash/Free to use
• 69 Ashwin Vaswani/Unsplash/Free to use
• 70 Dibakar Roy/Unsplash/Free to use
• 71 Dedale/Unsplash/Free to use
• 72 Creative Commons Attribution-ShareAlike
• 73 Creative Commons Attribution-ShareAlike
• 74 Leonardo Basso/Unsplash/Free to use
• 75 Dmytro Tolokonov/Unsplash/Free to use
• 76 Mika Baumeister/Unsplash/Free to use
• 77 UN/https://www.un.org/sustainabledevelopment/The content of this publication has not been approved by the United Nations and does not reflect the views of the United Nations or its officials or Member States.
• 78 Wade Austin Ellis/Unsplash/Free to use
• 79 Vladimir Fedotov/Unsplash/Free to use
• 80 Janne Leimola/Unsplash/Free to use
• 81 Iqro Rinaldi/Unsplash/Free to use

©️ Youth for a Better World Inc. All rights reserved 2026

The Climate Crisis Timeline is used with permission from the Zinn Education Project.

©️ Zinn Education Project. All rights reserved.