1. One issue particularly concerns scholars of food; why are certain foods acceptable in some cultures but not in others?

2. Some foods were once popular, but today—hardly anyone has heard of them.

3. In the 1990s, people in Great Britain were alerted to a new danger, mad cow disease.

4. In the 1960s, frozen foods—icy blocks of corn, peas, and string beans—were popular—and convenient—alternatives to fresh produce.

5. Today fresh fruits and vegetables are valued once again, unless a busy cook has no time for peeling and chopping.