Bridget Kendall is in Egypt to discuss evolution and faith in the 21st century.
Mike gets dirty hands in Scotland, meets the father of wave power and greets a minister.
HIV vaccine failure; a Russian science feud; private space rockets; mammoth extinction
How a Czech plastic explosive became synonymous with terrorism.
Josh Harris's web life; phone monitoring; Africa's future mobile phones; digital plaster.
Carl Zeiss: A State Within a State.
Mike visits Australia to ask listeners about mining, droughts and rock star politicians.
The world's rarest bird; polar thaws; a gene for speech and why sprinters run so fast.
Interactive Rite of Spring; BBC digital revolution; African techies; Jimmy Wales (Pt 2)