By the time they're 18 months old, kids know when you're sad, even if you're not bawling. iStockphoto hide caption

Children born to older moms and dads tend to have higher rates of autism, but researchers aren't sure why. iStockphoto hide caption

The new lunch plates are made from recycled newsprint and are easier for kids to hold, says Eric Goldstein, chairman of the Urban School Food Alliance. Courtesy of NRDC hide caption

Bradley Cooper and Rachel McAdams star in Aloha. Neal Preston/Columbia Pictures hide caption

Photographer Gabriel Garcia Roman's "Queer Icons" series portrays queer people of color as saints and warriors. Jahmal Golden is a poet and a student at The New School. Courtesy of Gabriel Garcia Roman hide caption

A Worrier's Guide To Life Courtesy of Andrews McMeel Publishing hide caption

Sgt. Patrick Swanton of the Waco Police Department speaks to the media as Texas Department of Public Safety Trooper D.L. Wilson (left) stands near a Twin Peaks restaurant where nine members of a motorcycle gang were shot and killed in Waco, Texas, on Tuesday. Mike Stone/Reuters/Landov hide caption

Officers investigate a shooting in the parking lot of the Twin Peaks restaurant in Waco, Texas, on Sunday. Jerry Larson/AP hide caption

What would happen if Americans and South Africans switch diets for a week? Hint: It doesn't turn out that well for the South Africans. Hanna Barczyk for NPR hide caption

Inside a Brown's Super Store. Brown's operates seven profitable supermarkets in low-income neighborhoods in Philadelphia. Courtesy of Brown's Super Stores, Inc. hide caption