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The U.S. farm belt is broiling. Lack of rain and high temperatures have put the huge annual harvests of corn and soybeans at risk. And because the United States is the world's largest producer of these two staple crops, the ongoing drought threatens food supplies not only in North America, but around the world.

Farmers in other large agricultural nations, such as China and India, as well as those in many smaller countries, have also felt the blunt force of extreme weather in recent years. India has looked askance at the low volume of the early annual monsoon rain, which it depends on for productive harvests and agriculture.

Until recently, the United States hadn't experienced extreme weather to the same degree. And, as with so much in the world these days, the effects of the U.S. drought will be felt globally--primarily through increased food prices. Of course, it's not solely bad if prices for some foods increase -- particularly those with high climate and ecological costs, such as meat and dairy products. Consumers may respond by reducing their intake of them, which could benefit public health and the environment.

But for the billions of people around the world for whom hunger and food insecurity are a fact of life, the impacts of spiking food prices for staples, such as daily grains or nutrient-packed vegetables and fruits, are dire.

Remember the 2008 food price shocks? Analysts fear a repeat: more hunger and more potentially deadly protests.

This situation underscores an urgent challenge: How can the global food system be made sustainable, equitable, and, crucially, climate-compatible? This means agriculture that's resilient amid the impacts of climate change, such as drought, erratic rainfall, and extreme temperatures, and that doesn't produce enormous amounts of greenhouse gases.

Unfortunately, the food system that is being globalized rapidly -- basically the U.S. model -- doesn't fit the bill. In large part, that's because at its core is the mass production of animals for meat, dairy, and eggs, as well as crops like corn and soybeans that are used for animal feed.

Since the 1970s, global meat production has grown nearly three times, and it is now 20 percent larger than it was in 2000. Each year, more than 60 billion land animals are used in meat, egg, and dairy production globally -- nearly 10 billion animals in the United States alone. Intensive systems, such as factory farms and feedlots, are nearly universal in the United States, and are gaining major footholds in the developing world. The scale of production, too, is expanding quickly.

Only a generation ago, most chickens in India were raised in backyard flocks, often by women. Now, 90 percent of the more than 2 billion chickens that come to market each year in the country have lived their entire lives in industrial-style facilities.

India is now the world's fifth biggest poultry meat producer. China's overall meat consumption is now twice that of the U.S.

If current trends continue, by 2050 the global livestock population could exceed 100 billion -- more than 10 times the number of people who'll likely be alive then.

Although Michael Herrmann, an adviser to the United Nations Population Fund, states that the current global food system could feed eight billion people, perhaps even nine billion. He emphasizes the tremendous waste of the food system: "A large share of the food we produce does not actually end up as food on our plates." Instead, large volumes of crops are used as animal feed.

The intensification of animal agriculture means that "the livestock sector enters into more and direct competition for scarce land, water, and other natural resources," according to the U.N. Food and Agriculture Organization (FAO). This, of course, has a significant impact on our ability to ensure equity and sustainability globally, along with broad-based prosperity for the world's people.

In addition, somewhere between 18 percent (according to the FAO) and 51 percent (according to a more recent estimate by current and former World Bank environmental specialists) of all human-caused greenhouse gases can be traced to the global livestock sector.

Governments at the recent Rio+20 conference agreed on the "necessity" of promoting, enhancing, and supporting "more sustainable agriculture," but were vague on the details.

Filling in the outline and establishing specific objectives is extremely important. Here are a few of the actions I suggest:

Governments (among others) should ensure that water pollution and land degradation; deforestation; degradation or destruction of ecosystems and biodiversity; and greenhouse gas emissions are no longer "external" to the livestock industry's balance sheet, but are rather internalized through fair pricing and are fully paid for.

In collaboration with civil society organizations, governments should propose viable alternatives to the industrial agricultural system that would be better for the climate, the environment, family farmers, and food and income equality.

Governments should provide incentives to promote cultivation of and access to foods that provide key nutrients, such as leafy greens and pulses, and that need less water than feed grains and may be better able to withstand climate shifts.

Governments or non-governmental and community-based organizations should launch public education efforts to encourage healthier, more sustainable patterns of eating that are based on traditional, largely plant-based regional and national cuisines.
The current global climate requires no less.

Originally published on CSRwire Talkback as a part of a series in collaboration with the Worldwatch Institute on Moving Toward Sustainable Prosperity.

Photo courtesy of Wan Park