Wednesday:

• Over the past several years, a license-plate tracking company called Flock has partnered with over 40 percent of police departments nationwide, allowing local law enforcement to track people's whereabouts across state lines. Jason Koebler, cofounder of 404 Media, unpacks how officials, including ICE, are using the technology, and why anti-surveillance activists on both sides of the are pushing back against the cameras.
• Lena H. Sun, Washington Post national reporter focusing on health, provides an update on the nationwide cyclosporiasis outbreak and the response from U.S. public health agencies, plus discusses President Trump's new executive order on childhood vaccines.
• Jessica Gould, education reporter for WNYC and Gothamist, talks about the steep drop in ELA test scores on last year's state test among city students, and what stakeholders think might be the cause of the decline.
• After a 15 year hiatus, the NYC Department of Sanitation has resumed putting bright green stickers on cars that don't follow alternate-side parking rules. Listeners call in to talk about other examples of public officials using shaming to change behavior, and share some ideas of their own.