On this day: April 22

POSTED: 11:48 AM PDT Apr 19, 2013    UPDATED: 11:00 PM PDT Apr 21, 2013 
Elian Gonzalez, 2000

Thousands rush to claim land in Oklahoma, the first nationwide Earth Day takes place, Richard Nixon dies, federal agents seize Elián González, and the Deepwater Horizon drilling rig sinks while spewing oil, all on this day.