This week, we take on a question from the sixth graders at East Oakland's Life Academy of Health and Bioscience. Many of them live near Interstate 880. They've seen lots of big rigs on I-880 but none on nearby I-580, which runs parallel but closer to the hills. They want to know why.

Additional Reading:

• Trucks are Banned on Oakland’s I-580. These Sixth Graders Wondered Why
• Asthma Rates Higher in California's Historically Redlined Communities, New Study Finds

Reported by Laura Klivans. Bay Curious is made by Olivia Allen-Price, Katrina Schwartz, Suzie Racho and Brendan Willard. Additional support from Kevin Stark, Erika Aguilar, Jessica Placzek, Kyana Moghadam, Isa Mendoza, Paul Lancour, Carly Severn, Ethan Lindsey, Vinnee Tong and Don Clyde.