Why 45? Who knows. I've included my Top 5 below. Click here for the entire list!
Members of the national security team receive an update on the mission against Osama bin Laden in the Situation Room of the White House on May 1.
A before and after shot of Joplin, Missouri after a massive tornado on May 22.
A monstrous dust storm (Haboob) roared through Phoenix, Arizona in July.
A University of California Davis police officer pepper-sprays students during their sit-in at an "Occupy UCD" demonstration in Davis, California. (Jasna Hodzic)
Cars are abandoned on Chicago's Lake Shore Drive during the "Snowpocalypse" in February.