Today, China feeds 1.38 billion people—approximately one-fifth of the global population—with about 10 percent of the world’s arable land. Compared to the United States, where each acre of land feeds one citizen on average, China has only 0.2 acres per person. This people-to-land mismatch helps explain why 9.3 percent of China’s population was undernourished in 2015.

Launched in Beijing in 2013, the highly successful grassroots “Empty Your Plate” campaign encourages Chinese consumers to eliminate food waste from their meals. Starting with blog posts on Weibo (China’s equivalent of Twitter), this campaign rapidly swept the entire country and attracted support from the central government, which later issued a series of policies urging restaurants to use smaller dishes and remove minimum charges. However, the volume of food waste in China is still astonishing.

“The United States should maintain a unique leadership role in global food security,” said former Senator Richard Lugar at a recent Center for International & Strategic Studies event, “The U.S. Global Food Security Strategy: Progress, Setbacks, and Forward Momentum,” which marked the one-year anniversary of the passage of the Global Food Security Act. Signed into law on July 20, 2016, the act required the interagency Feed the Future initiative to develop the first-ever U.S. Global Food Security Strategy.

A steadily increasing global population, growing food demand, and changing climate necessitate new kinds of thinking in agriculture but also fields like public health and energy, concludes a new book, Hot, Hungry Planet, by former Wilson Center Public Policy Scholar and current Senior Fellow at the National Socio-Environmental Synthesis Center Lisa Palmer.

An international food crisis is currently unfolding on a scale not seen since World War II. More than 20 million people in Somalia, Nigeria, South Sudan, and Yemen are in danger of famine. UN Under-Secretary-General and Emergency Relief Coordinator Stephen O’Brien said in March, “We are facing the largest humanitarian crisis since the creation of the United Nations.”

The world’s ocean fish stocks are “on the verge of collapse,” according to a special report from IRIN. Already small fishers in poor countries are reeling, turning to ever-more destructive techniques and suffering from poor health and dwindling livelihoods.

It’s often assumed that in the modern era, food security is an achievable goal. But between 2007 and 2008, a confluence of conditions shook the international food system to its core, fueling unrest and riots in more than 40 nations around the world. What’s more, this “perfect storm” may have been only a harbinger of challenges to come, according to a new report by Emmy Simmons of the Center for Strategic and International Studies (CSIS).