Science journalist Rachel Cernansky joins host Sarah Crespi to talk about progress on Africa’s Great Green Wall project and the important difference between planting and growing a tree.

Sarah also talks with Václav Kuna, a postdoctoral researcher at the Institute of Geophysics of the Czech Academy of Sciences, about using loud and long songs from fin whales to image structures under the ocean floor.

This week’s episode was produced with help from Podigy.

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About the Science Podcast

Download a transcript (PDF).

[Image: Holly Gramazio/Flickr; Music: Jeffrey Cook]

Authors: Sarah Crespi; Rachel Cernansky