Then there are locational issues. For example, it takes more (human-generated) energy to grow tomatoes in NZ than it takes to grow and can tomatoes in Italy the

Then there are locational issues. For example, it takes more (human-generated) energy to grow tomatoes in NZ than it takes to grow and can tomatoes in Italy then transport them to NZ. It sounds crazy, until you remember that tomatoes in Italy grow on hills and tomatoes in NZ require greenhouses and attendant infrastructure.