OMAHA, Neb. — Even as railroads are operating longer freight trains that sometimes stretch for miles, the companies have drastically reduced staffing levels, prompting unions to warn that moves meant to increase profits could endanger safety and even result in disasters.

OMAHA, Neb. — Billionaire Warren Buffett says the viral outbreak in China has slowed economic growth, but he remains confident in the long-term future of American business.

The federal agency that manages dams along the Missouri River received stern criticism from several U.S. senators earlier this month during a hearing held to examine the massive flooding that caused more than $3 billion in damage in the Midwest.

OMAHA, Neb. — The economy appears strong to the major freight railroads that haul the products and raw materials companies rely on, but the lingering trade disputes could derail business if they continue.