from kenya, i'm joined by elizabeth wathuti. n environmental campaigner and activist, and founder of the green generation initiative, which encourages young people to be environmentally conscious. professor sir partha dasgupta — a renowned economist at cambridge university who is apparently leading a review for the british treasury into the economics of biodiversity. partha joins us from cambridge in the uk. and here in london, i'm joined by the entrepreneur and green energy consultant michael liebreich. welcome to you all. and now, to ourfirst question of the day. it's hans from the usa — hans is a biochemical engineer, i think that's right, isn't it? what question do you have for our panel, hans? my question is, the ipcc says that we must reduce the use of coal to 2% or less of current levels by 2035. they say this cannot be accomplished without nuclear energy. new technology nuclear reactors recycle fuel and eliminate waste. plus, they cannot melt down. the cost problem is solved by a mass production of standard designs. franc