Mike goes on a US road trip, stopping to meet an inventor, a car dealer and a helpful man
BBC World Service
Mike gets dirty hands in Scotland, meets the father of wave power and greets a minister.
Mike visits Australia to ask listeners about mining, droughts and rock star politicians.
Mike heads to Barcelona to ask why climate change talks are slow, and he honours the bike
Mike continues his listener tour, chats about Bob Dylan and looks at making green money.