The Young Foundation has published a manifesto for social innovation Written by a team led by Geoff Mulgan, Social Silicon Valleys compares the vast investments made each year in scientific R&D (nearly 12 billion euros of public spending on R&D in the UK alone) with the piecemeal and marginal investment that is made in social innovation. The pamphlet warns that addressing the most important challenges of this century – including climate change, ageing and chronic disease, as well as the prospects for sustainable growth – will depend as much on social innovation as new technologies. The publication is supported by the British Council as part of the preparation for an international conference in China with ministers and city leaders from Europe and China to be held in Beijing in October.