Five children ranging in age from 8 months to 8 years old died after firefighters pulled them from the second story of a burning house in Erie, Pa., early Sunday morning. Four were siblings and the fifth was the homeowner’s child, according to Erie Fire Chief Guy Santone. The children were staying overnight at the residential day care while their parents worked.

Simone Biles became the first gymnast to perform a double-double dismount off the beam and the first woman to land a triple-double (three twists and two flips) during a floor routine this weekend. During Friday’s preliminary round of the U.S. Gymnastics Championships in Kansas City, Mo., Biles, 22, hit the double-twist, double-flip dismount but had to catch herself on the triple-double floor routine landing. On Sunday, she successfully landed the triple-double, won the all-around title, and qualified for the U.S. national team.

Southwest Airlines brought the recently discovered remains of an Air Force pilot killed in the Vietnam War back to Dallas on Thursday. The pilot of the flight? The son of the deceased soldier.

Rubber Duckie, you’re the one—out of the 63,000 that will “race” down the Chicago River on Thursday afternoon. A dump truck will launch the rubber ducks from Chicago’s Wabash Avenue Bridge, with one lucky duck moving downriver and crossing the finish line first in this 14-year tradition. Proceeds from the Chicago Ducky Derby go to Special Olympics Illinois, which received a check for $420,000 last year. Individuals can “adopt a duck” for $5 each, and the owner of the duck that’s plucked from the water at the end will drive home a 2019 Chevy Equinox.

FedEx will soon stop dropping off your Amazon Prime packages. The shipping giant announced Wednesday it will instead focus on working with retailers such as Target, Walgreens, and Walmart. FedEx’s ground contract with Amazon is set to expire, and it announced its was ending air deliveries for the online retailer two months ago.

NASA’s Curiosity rover is exploring a mountain on Mars where streams might once have flowed into bubbling lakes. The rover recently drilled rock samples that contained clay minerals formed from water mixed with sediment. As of Tuesday, the $2.5 billion robot has roved the Red Planet for seven years, traveling 13 miles and ascending 1,207 feet up the Martian terrain. Curiosity got its name from 11-year-old Clara Ma, who in 2009 won a nationwide naming contest.

As a 16-year-old trafficked runaway, Cyntoia Brown received a life-sentence for killing a 43-year-old man who had picked her up for sex in 2006. On Wednesday, she walked out of prison at age 31 after receiving clemency from Tennessee Gov. Bill Haslam in January. She will remain on parole for 10 years.