5 stories to follow: July 17

A speeding car struck a mother and three children who were crossing Roosevelt Boulevard in Olney late Tuesday night. (Steven M. Falk/Staff Photographer)

Here's your look at five stories we're following today:

1. Tragic car crash: A 27-year-old woman and two of her young children were killed in a late-night car crash on Roosevelt Boulevard. The group was trying to cross the boulevard at Second Street in the city's Feltonville section when they were hit. The woman, her 23-month-old son and her 9-month old son were killed. Two of her other children, boys ages 4 and 5, were hospitalized. The 22-year-old male driver of the car that struck them is undergoing drug and alcohol tests.

2. Heat continues: It's now an official heat wave in Philadelphia, and the hot temperatures are slated to stretch into a fourth-straight day. Here's how people across the region are coping.

3. Death of 4-year-old probed: Police are investigating the death of a 4-year-old Southwest Philadelphia girl who was brought to the Children's Hospital of Philadelphia Tuesday bleeding from both ears and with bruising across her body. Sources tell the Inquirer that the girl's death has been ruled a homicide.

4. Oval opening: A pop-up park at Eakins Oval on the Benjamin Franklin Parkway opens today. The park will be up through Aug. 18.

5. Medical pot for kids: New Jersey Gov. Chris Christie is being pressed to approve medical marijuana use for children. Over the past three weeks, the governor has received 1,500 faxes urging him to sign a bill that would ease the requirements for children to use medical marijuana.