Officials are warning of environmental hazards lurking in the rubble, water, and air of tornado-ravaged Joplin, Mo., as residents embark on a massive cleanup effort.
Contaminants may come from ruptured containers leaking chemicals into the city's water, as well as asbestos from ruined buildings.
So far, the U.S. Environmental Protection Agency has not discovered any serious pollution problems. Nevertheless, they're still cautious.
"Until the systematic assessment of the tornado's impact area is complete, it is not possible to fairly evaluate levels of risk or priorities for environmental response," EPA spokesman Chris Whitley said in an email.
Meanwhile, the number of people unaccounted for after last week's tornado in is down to 29 on Tuesday. Officials aren't certain of the death toll, but the number of remains is 146.
Victims of the May 22 tornado are dealing not only with the loss of loved ones, many with being suddenly homeless.
The twister wiped out nearly one-third of the city, destroying 8,000 buildings and leaving as many as 20,000 people without homes.
CBN's Operation Blessing International is on the ground in Joplin providing aid to those in need. Click play to hear how.
Visit Operation Blessing's website to learn how you can help to the people of Joplin.