Inventions, firsts, and turning points tied to today’s date — each one sourced and dated.
On December 11, 1997, delegates in Kyoto agreed the first treaty with legally binding targets to cut greenhouse gas emissions.
On December 11, 1972, Apollo 17 set down in the Taurus-Littrow valley—the last time humans have walked on the Moon.
On December 11, 1816, President Madison signed Indiana into the Union, capping a fast march from territory to statehood.
