One of the top water officials in the West was pushed to resign by the Trump administration. Anne Castle served as a federal representative to the Upper Colorado River Commission.

Interior Secretary Doug Burgum has ordered federal officials to review and consider redrawing the boundaries of national monuments created under previous presidents to protect unique landscapes and cultural resources.

All kinds of animals use conspicuous colors. Research from biologists at the University of Arizona found it's a quirk of evolution that started around 150 million years ago.

The number of monarch butterflies spending the winter in western states like Arizona and California dropped dramatically even as federal officials move to extend protections for the pollinator.

A federal grand jury has indicted a Navajo man, his father and a business partner on charges that they were running illegal marijuana growing operations in New Mexico and on the Navajo Nation to supply the black market.

Solar advocates continue to fight what they call a “discriminatory” fee added to the utility bills of Arizona Public Service customers who have solar panels.

A Miami college student in her 40s shares her experience returning to school and how motherhood has prepared her for this challenge.

NPR's Scott Simon talks to Gillian Tett, a columnist at the Financial Times, about the global economic fallout from President Trump's tariff policies.

The confectionary company, Cadbury, says it's made the world's largest Creme Egg - about as tall as a USPS mailbox. NPR's Scott Simon talks to chocolatier Dawn Jenks about the creation.

NPR's Scott Simon talks with author Rick Atkinson in Lexington, Mass., about the first book of his forthcoming trilogy about the American Revolution, "The British are Coming."

NPR's Scott Simon and Meadowlark Media's Howard Bryant discuss the NBA and NHL playoffs.