Federal scientists are in Sandusky County this week trying to solve the cancer cluster mystery in Clyde.
Several kids have come down with cancer in that area and authorities don't know why.
The Environmental Protection Agency is going to be collecint soil, air and water samples in eastern sandusky county.
The EPA has set up a hotline for residents to call if they have any information about possible cancer causers.
That number is 855-838-1304.