This week we hear stories on how a bat varies its heart rate to avoid starving, giant wombatlike creatures that once migrated across Australia, and the downsides of bedbugs’ preference for dirty laundry with Online News Editor David Grimm.

Sarah Crespi talks Jocelyn Kaiser about her guide to preprint servers for biologists—what they are, how they are used, and why some people are worried about preprint publishing’s rising popularity.

For our monthly book segment, Jen Golbeck talks to author Sandra Postel about her book, Replenish: The Virtuous Cycle of Water and Prosperity.

Listen to previous podcasts.

[Image: tap10/iStockphoto; Music: Jeffrey Cook]