Washington Monument shrinking: Why the D.C. landmark is shorter (VIDEO).

Why the Washington Monument Is Shrinking (Video)

Why the Washington Monument Is Shrinking (Video)

Slate in motion.
Feb. 19 2015 9:15 AM

Washington’s New Low

Why is D.C.'s iconic monument shorter now than it was in 1884?

tnc150218_washmonument_1280_1

Though some discrepancies in the Washington Monument's height may be the result of different measurement methods, they appear to be partly due to lightning strikes.