Nature detective Tom Heap investigates who, or what, is killing the common sparrow.
Laurie Taylor re-appraises Rugby with Tony Collins and Dr Dominic Malcolm.
Richard Daniel and his team discuss listeners' questions about the natural world.
Science broadcaster Professor Trevor Cox explores the science of aural architecture.
2/6 Simon visits an air traffic control centre to look at the computer systems.
Alex James meets some of the youngsters who visit Highfields care farm in Derbyshire.
Helen Mark meets the people and wildlife that make their home on Snowdon.
1/4 Gabrielle Walker explores why we know so little about the planet's oceans.
Quentin Cooper hears about the DNA reading machine, the ribosome.
Laurie Taylor tries to solve the myths of the great American West.
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