Curious Cases Folgen

Do alien civilisations exist? When will ET phone home?In the second part of our alien double bill, Hannah and Adam boldly go in search of intelligence. They may be some time.What will aliens look like? Where should we look for them? And what are the chances of finding complex life in the cosmos? Featuring astronomer Seth Shostak from the SETI Institute in California, exoplanet hunter Sara Rugheimer from the University of St Andrews and zoologist Matthew Cobb from Manchester University,Presenters: Hannah Fry, Adam Rutherford Producer: Michelle Martin.

Mike Holcombe from Largs in Scotland asks, "How do we look for alien life and what are we expecting to find?"In the first of two episodes on the search for ET, Hannah and Adam look for life inside the Solar System. How do we define life and why we obsessed with finding it on Mars? Or should we be looking for space squid on Europa instead?Features interviews with planetary scientist Monica Grady from the Open University, senior astronomer Seth Shostak from SETI and zoologist Matthew Cobb from the University of Manchester.Send your Curious Cases for consideration in to curiouscases@bbc.co.ukPresenters: Hannah Fry, Adam Rutherford Producer: Michelle Martin.

"Winter is finally over and the birds are all singing their hearts out at dawn. What's all the noise about? And why are some songs so elaborate?" asks Tony Fulford from Ely in Cambridgeshire. We find out how birds produce multiple notes at once, which one has the widest repertoire of songs, and why males like to show off quite so much. Plus, we talk to researcher Lauryn Benedict about the project which aims to solve the mystery of why female birds sing - www.femalebirdsong.org.Featuring interviews with RSPB President and nature presenter Miranda Krestovnikoff, and world-renowned birdsong expert and sound recordist, Don Kroodsma.Archive of 'singing like a wren' courtesy of The One Show, BBC TV.Send your cases for consideration to curiouscases@bbc.co.uk.Presenters: Adam Rutherford, Hannah Fry Producer: Michelle Martin.