This week in the Planet Earth Podcast: what the first creatures to walk on land looked like; the connection between the biodiversity of upland rivers and the ecosystem services they provide; and in an audio diary from Turkey, a University of Leeds researcher on the North Anatolian Fault.

• Early tetrapods, upland rivers, North Anatolian Fault - Naked Scientists Science Podcasts and Science Radio Shows
• Redesigning tetrapods - Planet Earth - Interviews
• Power to the Pollinators - Planet Earth Online - Interviews
• Ugly Animals Need Love Too - Podcasts
• Listen Up! The Science of Hearing... - Podcasts
• The American Signal Crayfish Invasion - Planet Earth Online - Interviews