Twenty five environmental groups are calling on federal wildlife officials to release three captive-raised Mexican gray wolf packs into the wild. KNAU’s Ryan Heinsius reports, they say the endangered population needs increased genetic diversity to survive.

It’s been almost a week since Randy Wilson, longtime editor of the Arizona Daily Sun, died unexpectedly at the age of 65. During his 23 years at the newspaper, he was a mentor to chief photographer, Jake Bacon, who is, of course, grappling with the loss. In this week’s Poetry Friday, Jake reads Thomas Mordaunt’s "The Call" in Randy’s honor.

Mars Rover Curiosity has dug up organic material in rocks just below the surface of what’s believed to be an ancient Martian lake bed.

The U.S. Environmental Protection Agency has allocated nearly $900,000 to the Navajo Nation for the cleanup of abandoned uranium mines. KNAU’s Ryan Heinsius reports, it’s the latest effort to remediate hundreds of sites on the reservation.