Inter Press Service: Humanity faces enormous challenges at the start of the 21st century, says Sir David King, Britain’s former chief scientific advisor and now director of the Smith School of Enterprise and the Environment at Oxford University in England. The crises surrounding climate change, population growth, water, food and land are deeply interconnected, Sir David said at the opening of the Euroscience Open Forum in Barcelona, Friday. The Forum, known as ESOF, is a biannual gathering of …