A toddler’s death in Cobb County last week has brought attention again to the issue of children being left unattended in hot cars. The boy’s death was initially attributed to heat stroke, though police say the investigation is ongoing and “much has changed about the circumstances leading up to the death of this 22-month-old since it was first reported,” according to media reports. The father told investigators he forgot to drop off the child at a day care center and went to work, leaving the boy strapped into a car seat all day.