She held up a photograph of a child in a striped shirt with short, brown hair. “Boy!” the students cried out in unison. Ms. Reeves looked at the children spread out on the colorful rug before her.

Do you need to worry about your child’s pee-stained mattress? (Photo illustration: Jay Sprogell for Yahoo; photos: Getty Images) At some point, almost every parent will be faced with a decision: what ...

“Is this a boy or a girl?” Ms. Reeves asked the class. She held up a photograph of a child in a striped shirt with short, brown hair. “Boy!” the students cried out in unison. Ms. Reeves looked at the ...

At some point, almost every parent will be faced with a decision: what to do with a mattress that has a distinctive yellow urine stain. Maybe a baby’s full diaper sprung a leak during their nap, a ...