Thanksgiving is a time to gather with friends and family to appreciate the bounty of the fall harvest. Eating is both a highly social and personal part of our lives, and food preferences can even make for lively dinner table conversations.

In North America we tend to focus on how food is grown and harvested. Consumers face a myriad of labels when they shop for Thanksgiving feasts B次元官网网址� organic, free range, cage-free, Marine Stewardship Council, fair trade, non-GMO, vegetarian-fed and locally grown among them. From a sustainability point of view, though, the most important question is missing from these labels: Will this food be eaten or will it end up contributing to the worldB次元官网网址檚 growing food-waste problem?

WeB次元官网网址檙e hearing a lot about food waste lately. Every year a staggering one-third B次元官网网址� 1.3 billion tonnes B次元官网网址� of the worldB次元官网网址檚 food is wasted after it has been harvested: 45 per cent of fruit and vegetables, 35 per cent of fish and seafood, 30 per cent of cereals, 20 per cent of dairy products and 20 per cent of meat. Food waste ends up in landfills, increasing methane emissions and contributing significantly to climate change. A recent study found Americans waste close to $200 billion on uneaten food while Canadians throw away $31 billion.

These figures only account for 29 per cent of the full cost of waste. They donB次元官网网址檛 include factors such as labour, fuel to transport goods to global markets, inefficiency losses from feed choices used to produce meat and fish, or food left unharvested. As methodologies are improved and accounting becomes more inclusive, weB次元官网网址檙e likely to find even higher waste figures. Dozens of studies across many countries with different methodologies not only confirm the increase in food waste but suggest food waste is even higher and on the rise. In Canada, food waste cost estimates increased from $27 billion to $31 billion between 2010 and 2014.

In a world where one in nine people doesnB次元官网网址檛 get enough to eat B次元官网网址� many of them children B次元官网网址� this is unconscionable. According to the World Food Programme, poor nutrition kills 3.1 million children under the age of five every year. ItB次元官网网址檚 the cause of almost half of child deaths in that age range. When it comes to feeding the world, distribution and waste appear to be greater problems than population. And yet we continue to destroy more forests, drain more wetlands and deplete the oceans of fish to meet the needs of a growing world population.

Not only that, the monumental economic losses from food waste represent money that could be used to fund much-needed social and environmental programs. Money lost in North America would cover most of CanadaB次元官网网址檚 federal budget. Food waste in Metro Vancouver homes adds about $700 a year to a householdB次元官网网址檚 grocery bill.

Every morsel of food wasted represents unnecessary greenhouse gas emissions, conversion of natural ecosystems to agricultural lands and disruptions to marine food webs. Based on 2007 data, the UN estimates that the equivalent of 3.3 gigatonnes of CO2 emissions globally can be attributed to food waste. CanadaB次元官网网址檚 total emissions, in comparison, are about 0.7 gigatonnes. If food waste were a nation, it would be the worldB次元官网网址檚 third-largest emitter.

We need to tackle food waste at all levels, from international campaigns to individual consumption habits. In September, the UN agreed to an ambitious global goal of reducing food waste by 50 per cent by 2030 as both an environmental and humanitarian imperative. Earlier this year, Metro Vancouver joined the international effort Love Food Hate Waste to meet municipal waste goals and encourage individual behavioural change. A similar U.K. campaign led to a 21 per cent cut in food waste over five years. Grocery stores in France and other countries are offering discounts for misshapen produce under an B次元官网网址渦gly fruits and vegetablesB次元官网网址� campaign. Businesses are using audits to map out where food waste is affecting bottom lines.

Food waste is a crime against the planet and the life it supports. Reducing it not only addresses food insecurity, it benefits everyone. This Thanksgiving dinner, whether youB次元官网网址檙e vegan, vegetarian, carnivore, locavore or pescetarian, plan for a zero-food-waste meal. Show thanks for ecosystems, growers and harvesters by buying only what you will eat and eating all that you buy.