Earth Watch Report -  Sinkholes

AP Photo/Chris O'Meara

Jeremy Bush, brother of Jeffrey Bush, breaks down Friday, March 1, while speaking about trying to rescue his brother.

Sinkholes are most often found in seven states, including Florida, where the ground recently collapsed Thursday in Seffner. NBC's Gabe Gutierrez reports.

By Gabe Gutierrez and M. Alex Johnson, NBC News

Authorities evacuated neighbors Friday around a sinkhole that swallowed the interior of a Florida house — apparently taking a man to his death — describing the sinkhole as "seriously unstable" and likely to keep growing.