These Were the 15 Most Heartbreaking Parenting Headlines of 2016

"I normally would not post something this personal, but I do not remember the last time I felt so justly upset," starts Jessica Coakley Martinez in a post to Facebook from London Heathrow Airport, where she was forced to dispose of 500 ounces of pumped breast milk in April. Aviation security informed Martinez that though she'd passed through several countries' airports over the course of two weeks with the frozen-solid milk, it "might at some future time become a liquid," which violates the Civil Aviation rule.