A mysterious parasite is spreading. How to protect yourself.

The U.S. and Iran veered back toward full-scale conflict. The Associated Press reports on the renewed tension after President Trump launched a third night of strikes and moved to reinstate a naval blockade on Iranian ports. A mysterious parasite called Cyclospora has sickened thousands of people across more than 30 states this summer. The Washington Post’s Lena Sun explains how officials are racing to trace it back to its source. Rebecca Lowe of the Apple News Original podcast ‘After the Whistle’ previews this week’s World Cup semifinals. Plus, Maine’s attorney general is investigating an ICE shooting that claimed a Colombian man’s life, the late Sen. Lindsey Graham’s sister was named to fill his Senate seat, and one of the most complete T. rex skeletons ever found heads to auction. Today’s episode was hosted by Gideon Resnick.