Bombs in Hilla and Karbala, Iraq, killed 30 Shias and wounded 100 others.
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Amateur British chemist Sir James Jay invented invisible ink.
A 7.4 magnitude earthquake struck Hawaii.
British singer-songwriter Adele released her hit single 'Rolling in the Deep.'
Pong was released. It was the first commercially successful video game.
Martinique earthquake shook the majority of the Eastern Caribbean.
