Here’s an advance look at some of the “This Day in Geographic History” (TDIGH) events coming up this week. For each date, we’ve matched it with a map or visual, background information, and a classroom activity so you can plan ahead.
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Monday, September 11

The 2001 terrorist attack resulted in the U.S. government’s declaration of “The War on Terror,” which led to extended wars in Afghanistan and Iraq.
Visual: Photo gallery
Background: al-Qaida
Activity: Read and discuss Survivors’ Stories. Use this blog post for discussion ideas.
Thursday, September 14
TDIGH: Arctic Ice Reaches Record Low
In 2007 satellite imagery revealed that sea ice in the Arctic had shrunk to the smallest area ever recorded, providing additional evidence of climate change.
Map/Graphic: Arctic Ice
Background: More about the Arctic’s geography and climate
Activity: Why Melting Glaciers Matter to Coasts
Friday, September 15

TDIGH: Darwin Explores Galapagos Islands
Naturalist Charles Darwin developed his theory of natural selection from his research in the Galapagos Islands, which began in 1835.
Map: Galapagos Islands and Route of the HMS Beagle
Background: Charles Darwin and more about the Galapagos Islands
Activity: Learn about “Darwin’s Paradox” and how scientists recently solved it.
TDIGH: Hispanic Heritage Month
Hispanic Heritage Month, which began as a week in 1968, celebrates the contributions of Hispanic and Latino Americans.
Map: Latino Population of the U.S.
Background: Cultural Diversity in the U.S.
Activity: Watch this video of author Junot Díaz accepting the Hispanic Heritage Literature Award in 2016. Discuss his speech in the context of President Trump’s recent decision to end DACA.
Saturday, September 16

TDIGH: Gandhi Protests Caste Separation
In 1932 Indian reformer Mahatma Gandhi began a six-day fast to protest caste separation in British-controlled India.
Map: India
Background: What is India’s caste system? and Gandhi Arrested
Activity: Watch this video about Gandhi and his belief in nonviolence.