The first of four webcast Earth Debates in advance of Rio+20 will happened at 19.00 on Wednesday 25 January. The Earth Debates are an initiative of the Natural History Museum, London, UK View the first Earth Debate in its entirety online: www.nhm.ac.uk/natureplus/message/16557#16557

Visit the Earth Debates website for more: www.nhm.ac.uk/nature-online/biodiversity/earth-debates//

Ecosystem services – can we put a price on nature? was chaired by BBC Environment correspondent Richard Black.

The panellists were:

• Prof Sir Robert Watson FRS, Chief Scientific Adviser For Defra and former science advisor to the World Bank
• Claire Brown was a senior scientist at UNEP-WCMC who coordinated the UK National Ecosystem Assessment development
• Will Evison, an environmental economist with leading consultants PwC was the editor of the TEEB for Business report.
• Ian Dickie, a Director of the city business Aldersgate group which lobbies for better business engagement in the green economy.