In this week's show, drama on the high seas as anti-whaling activist, Captain Paul Watson, on board a ship in the Southern Ocean tells us how two of his Sea Shepherd crew have been detained on a Japanese whaling ship they were pursuing. Is he the 'eco-terrorist' the Japanese claim he is?
Jonathon Porritt, who chairs the sustainable development committee, says the government ignored his advice over its nuclear plans and made the wrong decision.
John Vidal speaks to former Jain monk, Satish Kumar, who walked from India to Britain and founded the Schumacher college for sustainable living in Devon. He asked him what role spirituality can play in the environmental movement.
And we hear from the New York Climate Action Group about their campaign to persuade Mayor Michael Bloomberg to phase out the use of tropical hardwoods in the city's park benches, boardwalks and bridges.
Larry Elliott, the Guardian's economics editor, and, Lucy Siegle, ethical living columnist for The Observer, are in the studio to discuss the week's news including the environmental impact of India's "people's car".
And Guardian Unlimited's acting editor, Jessica Aldred, has this week's pledge from Tread lightly - to help you cut your CO2 - swapping short haul flights for the train.
