On this day: April 22

POSTED: 11:48 AM PDT April 19, 2013    UPDATED: 11:00 PM PDT April 21, 2014 
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.