"Our global food security challenges are daunting: food price spikes and increasing food prices look set to continue unabated, around one billion are suffering from chronic hunger, and we must feed a growing population in the face of a wide range of adverse factors, including climate change," but "I believe there is reason for optimism," Sir Gordon Conway, professor of international development and agricultural impact at Imperial College London, writes in the Huffington Post U.K. "Impact" blog. "Yes we can feed the world, but only if we accept that agricultural development is the best route to achieving sustainable economic growth in developing countries, and achieve an agriculture that is highly productive, stable, resilient and equitable," he continues, adding, "I believe there are four interconnected routes to achieving a food secure world: innovation, markets, people and political leadership."