Last year, secret-sharing website Wikileaks released 573,000 pager intercepts from 9/11. A group of German psychology students used this data to create an "emotional timeline" of the day, tracing the ebb and flow of sadness, anxiety and anger.

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It turns out that in addition to enraging the Pentagon, the breadth of Wikileaks' leaks are a boon to researchers. The psychology students at Germany's Johannes Gutenberg University parsed the pager messages, which encompass a 24-hour period surrounding 9/11, for words related to sadness (like "crying" or "grief"), anxiety and anger. Then they traced changes in the relative prevalence of each emotion-laden word throughout the day. You'll see that anger quickly outpaces fear and anxiety. Flip the chart upside down for a rough idea of where we're at today. [Psychology Today]