SciDev.Net: A leading climate change expert has warned that water shortage is the greatest threat to China’s agricultural sector this century, amid a drought across the country. As demand for water continues to rise and less is available for agriculture, “China will see a food shortfall of 5–10 per cent — a disastrous outcome in a country of 1.3 billion people — unless effective and timely measures are taken,” said Lin Erda, one of China’s top climate change experts and leader of a joint …