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Explore the history, culture, science, nature, architecture, and stories that link the iconic spaces in the National Mall and Memorial Parks to our nation and its people. The articles collected here are produced by NPS staff at the National Mall and Memorial Parks.

Acid Rain's Slow Dissolve

May 22, 2012 Posted by: Megan Nortrup, Science Communicator, National Capital Region

Remember acid rain? Although pollution levels have improved, it is still here, and you can see evidence of acid rain’s effects in several spots on the National Mall.

Science, Thomas Jefferson Memorial, Ulysses S. Grant Memorial, Acid Rain, Pollution, Nature