Data Max


Food Foolish


Table of Contents

The hidden connection between food waste, hunger, and climate change. 

Hunger, food security, climate emissions and water shortages are anything but foolish topics. The way we systematically waste food in the face of these challenges, however, is one of humankind's unintended but most foolish practices. We wrote this book to call attention to the extraordinary social and environmental opportunities created by wasting less food. We are optimistic that real solutions to feeding the world and preserving its resources can be unlocked in the context of mitigating climate change.

Author John Mandyck serves as chief sustainability officer for United Technologies Building & Industrial Systems. He is a member of our Corporate Council and chairs the Corporate Advisory Board of the World Green Building Council, and serves as chairman of the board of directors for the Urban Green Council in New York City. 

Have you ever thought about how much food we waste every year, and the consequences that follow? One-third or more of the food produced globally is never eaten, amounting to over 1 billion metric tons of food being lost or wasted. The consequences of this waste stretch far beyond just the obvious issue of hunger, affecting our environment and climate as well. In this article, we'll explore the extent of food waste, its connection to hunger and climate change, and potential solutions to tackle this pressing issue.

The Global Food Waste Problem

Causes of food waste

Food waste is a complex problem with various contributing factors. In developing countries, it often decays in fields before harvest or spoils during transportation. Some is lost in retail markets before it reaches consumers. In developed countries, people buy too much food and throw it away, or reject perfectly nutritious food that is cosmetically imperfect.

Food waste in developing and developed countries

The issue of food waste is not restricted to any particular region or income level. Both developed and developing countries experience significant amounts of waste, albeit for different reasons. In developed countries, the problem is more about consumer behavior, while in developing countries, it is often a result of inadequate infrastructure and logistics.

The Connection Between Food Waste and Hunger

Enough food for everyone

Interestingly, we produce enough food to feed 10 billion people—enough for everyone on the planet today and those expected by 2050. Yet, more than 800 million people are chronically hungry, and 2 billion suffer from malnutrition, many of them children under 5.

The impact on malnutrition and poverty

Food waste has a direct impact on malnutrition and poverty. When food doesn't reach those who need it the most, it exacerbates these issues, robbing billions of people of their full potential.

Environmental Impact of Food Waste

Water waste

The water used to grow the food we discard is greater than the water used by any single nation. This wastage puts tremendous pressure on our water resources, which are already scarce in many parts of the world.

Greenhouse gas emissions

Food waste also contributes significantly to greenhouse gas emissions. The embodied carbon dioxide (CO2) emissions in food waste represent 3.3 billion metric tons, more than twice the emissions of all cars and trucks in the United States. If food waste were a country, it would be the third largest emitter of greenhouse gases behind China and the United States.

Food Waste and Climate Change

The missing link in policy discussions

Despite its significant impact, the connection between food waste and climate change is often missing from policy discussions and public discourse. Addressing food waste should be a priority in climate change mitigation efforts, but it often goes overlooked.

Food conservation as important as energy conservation

Food conservation is just as important as energy conservation. Public policies have successfully encouraged energy efficiency to spread more power throughout our economy without having to build costly energy production facilities that result in greater environmental emissions. The same rigor must now be applied to prevent food waste.

Solutions to Tackle Food Waste

Reducing waste in the supply chain

To address food waste, we need to target every stage of the supply chain, from farms to retail stores. Improving infrastructure, storage, and transportation in developing countries can reduce losses during production and distribution. In developed countries, more efficient inventory management and better collaboration between supply chain stakeholders can help minimize waste.

Awareness and education

Educating consumers about food waste, proper storage, and meal planning can help reduce the amount of food discarded at the household level. Promoting the use of "ugly" produce and encouraging responsible buying habits can also make a significant difference.

Public policies and incentives

Governments can play a crucial role in reducing food waste by implementing policies and incentives that promote waste reduction, such as tax breaks for businesses that donate surplus food or regulations that standardize expiration date labeling.

The Potential Benefits of Reducing Food Waste

Increased food security

Reducing food waste means more food will reach those who need it, helping to alleviate hunger, malnutrition, and poverty.

Reduced environmental impact

Using resources more efficiently and reducing greenhouse gas emissions associated with food waste can have a positive impact on the environment, helping to mitigate climate change.

Economic benefits

Reducing food waste can also lead to economic benefits by lowering the cost of food production and reducing the need for additional investments in agricultural infrastructure.


Tackling the issue of food waste is essential for addressing hunger, climate change, and the efficient use of our planet's resources. By implementing solutions such as improved supply chain management, increased awareness and education, and supportive public policies, we can make significant strides toward reducing food waste and its negative consequences.


  1. Why is food waste a problem?

Food waste is a problem because it contributes to hunger, malnutrition, environmental degradation, and climate change. It also represents an inefficient use of resources like water, energy, and land.

  1. How does food waste contribute to climate change?

Food waste contributes to climate change through the release of greenhouse gases associated with the production, transportation, and decomposition of wasted food.

  1. What can be done to reduce food waste at the household level?

At the household level, reducing food waste can be achieved through better meal planning, proper food storage, responsible buying habits, and using or donating leftovers.

  1. How can governments help reduce food waste?

Governments can help reduce food waste by implementing policies and incentives that promote waste reduction, such as tax breaks for businesses that donate surplus food, regulations that standardize expiration date labeling, and funding for education and awareness campaigns.

  1. What are the benefits of reducing food waste?

Reducing food waste can lead to increased food security, reduced environmental impact, and economic benefits by lowering the cost of food production and reducing the need for additional investments in agricultural infrastructure.

Aaron Bernstein, MD, MPH

Aaron Bernstein is the Interim Director of The Center for Climate, Health, and the Global Environment, a pediatrician at Boston Children’s Hospital, and an Assistant Professor of Pediatrics.

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