Food Waste
Approximately what fraction of the food produced worldwide is wasted?
About one third.
What is urban farming?
Growing food in cities.
What is compost?
Decomposed organic material that can be added to soil.
What percentage of Earth's land is described in the video as developed urban areas?
About 3%.
What is one way people could produce food in cities?
Urban farms or vertical farms.
Why do supermarkets sometimes throw away fruits and vegetables that are still edible?
They may look imperfect or fail to meet appearance or quality standards.
In which American city is City Farm located?
Chicago.
What happens to poor soil when food-waste compost is added?
It becomes richer in nutrients and better for growing crops.
What percentage of Earth's land is described as uninhabitable?
About 57%.
What are vertical farms?
Farms that grow crops in stacked layers, often indoors.
What did City Farm collect from grocery stores and restaurants?
Discarded food to turn into compost.
What type of land does City Farm use to grow food?
Vacant or unused urban lots.
According to the video, how much could a tomato weigh in rich soil compared with poor soil?
About two pounds in rich soil compared with one pound in poor soil.
The video compares the land needed to grow crops for the world to the size of which continent?
South America.
What does aquaponics combine?
Fish farming and growing plants in water.
How does composting food waste help the environment?
It reuses waste, enriches soil and can reduce the amount of food sent to landfill.
Why does City Farm put a layer of compost on its land?
To improve the soil and help crops grow better.
Why can richer soil help farmers earn a better living?
The same planting and harvesting effort can produce more or better-quality food.
Which continent-sized area does the video compare with the land used for livestock?
Africa.
Why can LED lights be useful in indoor farms?
They use energy efficiently and produce less heat than many conventional grow lights.
How could reducing food waste help feed a growing global population?
More of the food already produced would be available to eat, reducing the need for extra farmland.
Give two benefits of growing food within a city instead of transporting it from far away.
Food can be fresher, transport uses less fossil fuel, and local jobs can be created.
Why did City Farm seal the vacant land before adding compost?
To isolate contaminated soil because the land had been in an industrial city.
Why could feeding a global population of 9 billion people put pressure on available land?
More food would be needed, but much of Earth's land is uninhabitable or already used for other purposes.
The video suggests focusing on nutrition rather than just calories. What does this mean?
Producing food that provides good nutrition and supports health, rather than simply maximising the amount of food or energy produced.