How to run a climate change fair at your school

<IMG alt="Broad beans" src="http://pakedu.net/wp-content/uploads/2013/05/wpid-Broad-beans-010.jpg" width=460 height=276 itemprop="contentUrl representativeOfPage"> Climate change: students at St Pauls have learnt that buying British produce and growing their own vegetables are just two small steps they can take towards reducing their carbon footprint. Photograph: Alamy<P>Last year the Science Museum threw us a challenge; to organise a mass participation

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