Here is the latest Iowa news from The Associated Press

DES MOINES, Iowa (AP) — A state board has approved a measure expanding the number of medical conditions that can legally be treated by medical marijuana in Iowa. The Des Moines Register reports the Iowa Medical Cannabidiol Board voted Friday to allow those with chronic pain to have legal access to medical marijuana. The board denied allowing generalized anxiety disorder and opioid dependency as qualifying conditions.

OMAHA, Neb. (AP) — A former eastern Nebraska postmaster has been sentenced to probation for embezzling from the Fort Calhoun Post Office. Federal prosecutors say 54-year-old Steven Whitesel, of Council Bluffs, Iowa, was sentenced Friday in Omaha’s federal court to four years’ probation, 160 hours of community service and ordered to pay nearly $70,000 in restitution. Prosecutors say Whitesel submitted false mileage reimbursement requests to illegally collect nearly $70,000.

OMAHA, Neb. (AP) — Swarms of mayflies have emerged from under water along the Missouri River and are caking drivers’ windshields. The Omaha World-Herald reports mayflies spend 99% of their lives in water, but they rise above when they become winged adults to take part in a mating swarm. They quickly die after that. Dominator Fuel in Rock Port, Missouri, sold out of windshield wiper fluid in light of the mayflies’ arrival. Urban entomologist Jody Green says mayfly hatches are a yearly event.

OMAHA, Neb. (AP) — Hopes by small aviation museum in southwestern Iowa that a stamp in its possession was rare enough to parlay a potential fortune crashed Friday when experts told them it wasn’t real, and likely not even worth the paper it was glued upon. The Iowa Aviation Museum in Greenfield, Iowa, had what it thought was an “Inverted Jenny” stamp on display for some 20 years. After bringing it to Omaha, they learned it wasn’t authentic.