Discover what causes acid rain, and how scientists were able to largely eliminate this major environmental threat. -- In 1963, scientists studying Hubbard Brook Experimental Forest made a shocking discovery. Their most recent rainfall samples were nearly 100 times more acidic than usual; which could destroy the area’s ecosystems in a matter of decades. What was causing this deadly rainfall? And what could be done to stop it? Joseph Goffman details how scientists transformed this major threat into a minor issue. Lesson by Joseph Goffman, directed by Nick Hilditch. Support Our Non-Profit Mission ---------------------------------------------- Support us on Patreon: bit.ly/TEDEdPatreon Check out our merch: bit.ly/TEDEDShop ---------------------------------------------- Connect With Us ---------------------------------------------- Sign up for our newsletter: bit.ly/TEDEdNewsletter Follow us on Facebook: bit.ly/TEDEdFacebook Find us on Twitter: bit.ly/TEDEdTwitter Peep us on Instagram: bit.ly/TEDEdInstagram ---------------------------------------------- Keep Learning ---------------------------------------------- View full lesson: ed.ted.com/lessons/should-you-be-worried-about-acid-rain-joseph-goffman Dig deeper with additional resources: ed.ted.com/lessons/should-you-be-worried-about-acid-rain-joseph-goffman#digdeeper Animator's website: nickhilditch.com ---------------------------------------------- Thank you so much to our patrons for your support! Without you this video would not be possible! Yvonne Feijoo, Sid Chanpuriya, Arjay Arcinue Dineros, Anoom Yasmin, Laura Johnson, Anoop Varghese, David Yastremski, Zoë Tulip, B, Jason Harrison, Erica Guerrero, Richard Manklow, Roberto Chena, Oliver Koo, Luke Pisano, Andrea Gordon, Aleksandar Donev, Nicole Klau Ibarra, Milo Vermeulen, Ryan Weiler, Jesse Lira, Ezekiel Raui, Itay Levi, Zongpu Kou, Cameron Chakraverty, Petr Vacek, Rhys Patterson, Dennis, Olivia Fu, Katrina Adams, Regina Post, Mary Collins, Kari Teffeau, clumsybunnie, Adam Leos, Jeremy Laurin, Cindy Lai, Liz, Bhargav Pandravada, Rajath Durgada Manjunath, Dan Nguyen, Chin Beng Tan, Alejandro Gomez, Tom Boman, Karen Warner, Isorn Sookwanish, Iryna Panasiuk, Diane Gallin, Aaron Torres and Vasundhar.

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