Bat calls, weather balloons, telomeres and ageing

This week in the Planet Earth Podcast: an online tool to identify bats is helping to protect them, and it could make a scientist of us all. Also, an audio diary from a researcher from the National Centre for Atmospheric Science who's on the Isle of Arran in Scotland; and why there's more to ageing than telomeres. Like this podcast? Please help us by supporting the Naked Scientists