How would it change your life? and what could be done to prevent it in the future?
I think she's talking about that incident in eastern Europe from recently.
It really depends on if you or your home were caught in the torrent. If you weren't outright crushed, the heavy metal content could easily kill you, either sooner from biological damage, or later as a result of complications caused by exposure to large amounts of heavy metals.
What is The Red Sludge?