On today’s spring pledge-drive show we offer segments of two feature interviews. See extended versions also below. Both books are available to those who pledge at least $60 to KGNU. Call 303.449.4885 today.

Rust: The Longest War (start time: 4:25) It is arguably the most destructive natural disaster in the modern world. And it’s the topic of local journalist Jonathan Waldman’s debut book, which has just been published. It’s called Rust: The Longest War. Jonathan talks with How On Earth host Susan Moran about the book, which included fascinating tales of the “smart pig” that inspects the Alaska pipeline, as well as Ball Corp’s Can School in Golden, Colo. Catch Jonathan tonight  7:30 at the Boulder Book Store.

The Moral Arc (start time: 13:21) Author and renowned skeptic Michael Shermer talks with How On Earth contributor Shelley Schlender about his The Moral Arc: How Science and Reason Lead Humanity toward Truth, Justice, and Freedom. The book addresses a wide range of modern issues, including just how science and reasons can help to pave the way toward further reductions in nuclear warheads, toward greater equality for people with different gender and sexual orientations, and toward the abolishment of the death penalty. That’s pretty optimistic for the nation’s best known skeptic!

Hosts: Kendra Krueger, Susan Moran

Listen here to the show.