The Ricketts family poses on the Chicago Cubs field in 2010, a year after they bought the team. From left, Laura Ricketts, Joe Ricketts, Marlene Ricketts, Todd Ricketts, Tom Ricketts and Pete Ricketts. Nam Y. Huh/AP hide caption

itoggle caption Nam Y. Huh/AP

Third-year medical student Allie Tetreault, left, talks with Gabrielle Nuki, 16, at Maine Medical Center in Portland, Maine. Gabrielle helps med students practice patient care. Patti Wight/MPBN hide caption

itoggle caption Patti Wight/MPBN

Tony Stewart, driver of the #14 Bass Pro Shops / Mobil 1 Chevrolet, hits the wall on the backstretch during the NASCAR Sprint Cup Series Oral-B USA 500 at Atlanta Motor Speedway on Sunday in Hampton, Ga. Jamie Squire/Getty Images hide caption

itoggle caption Jamie Squire/Getty Images

Long time employees Denise Miller, facing camera, and Gloria Panameno hug as they leave the Showboat Casino Hotel on Sunday. Owner Caesars Entertainment closed the still-profitable Showboat to reduce the number of casinos in Atlantic City, which has been struggling with plunging revenue. Mel Evans/AP hide caption

itoggle caption Mel Evans/AP

A glimpse of what it's like in the sinkhole that opened up Wednesday under a wing of the National Corvette Museum in Bowling Green, Ky. National Corvette Museum hide caption

itoggle caption National Corvette Museum

This hangout spot in East Baltimore — like the rest of the city's outdoor spaces — now comes with a police-enforced nighttime age limit. Children under 14 must be indoors by 9 p.m. each night, all year long. Kids age 14-16 can stay out a little later, until 10 p.m. on school nights and 11 p.m. on other nights. Courtesy of Brian O'Doherty hide caption

itoggle caption Courtesy of Brian O'Doherty

Across Washington State, hydroelectric dams are blocking salmon as they migrate to their spawning grounds. Enter the salmon cannon. Ingrid Taylar/Flickr hide caption

itoggle caption Ingrid Taylar/Flickr