OMAHA, Neb. (AP) — Eight special education students have learned something about the workday world, thanks to their month on duty at Omaha’s Henry Doorly Zoo & Aquarium.

The students were part of an Omaha Public Schools program aimed at exposing students to job expectations and preparing them for future jobs.

Among the lessons: customer service, how to accept compliments from co-workers and what positive body language looks like.

The students weren’t paid, but they earned school credit while acquiring employment skills.

OMAHA, Neb. (AP) — The U.S. government began handing out land to railroads to encourage development more than 150 years ago, but questions remain about how much control those companies have over the land.

Union Pacific faces several lawsuits related to whether it had the authority to allow an oil pipeline to be built along its tracks in six states and who is entitled to the royalties that are worth more than $14 million a year.

University of Florida law professor Danaya Wright says sorting out whether Union Pacific controls the land might require a detailed review to determine whether the railroad bought the land or received it as part of a federal grant.

Union Pacific plans to defend itself against the lawsuits.

The states are Arizona, California, Nevada, New Mexico, Oregon and Texas.

YELLOWSTONE NATIONAL PARK, Wyo. (AP) — Bison gored a woman and tossed a teenager into the air in Yellowstone National Park, the latest run-ins with the massive animals during tourist season in the popular landmark.

The National Park Service says a bison gored a 68-year-old woman Wednesday on a trail near Yellowstone Lake. She was taken to a hospital, but her condition wasn’t immediately known.

On June 23, a bison tossed a 19-year-old off-duty park concession employee who was off trail. She was treated and released from a hospital for minor injuries.

In other encounters, the animals have gored a 16-year-old girl and tossed an Australian tourist in the air. Both suffered serious injuries.

Yellowstone prohibits people from getting within 25 yards of bison or other large animals and within 100 yards of bears and wolves.

WEST POINT, Neb. (AP) — Federal officials are opening an investigation into an explosion and fire at a northeast Nebraska petroleum distribution center that left seven people injured.

The U.S. Department of Labor’s Occupational Safety and Health Administration says officials at its Omaha office will look into the Wednesday afternoon explosion at Sapp Bros. Petroleum in West Point. The agency says it will investigate whether there were safety violations at the facility and if it contributed to the incident.

OSHA says it hasn’t inspected the Sapp Bros. facility in West Point in the past five years, though it has issued citations for other company locations.

Two of the injured people were taken to the burn unit at an Omaha hospital.