In recent years, mackerel stocks have been thriving, both in terms of their numbers and distribution. But the individual mackerel are not doing so well. They are growing more slowly and have become thinner, probably due to tough competition for food within the population.
When children are asked about their Internet use, their responses differ to those of their parents. This is one of many ethical dilemmas for those conducting research with children. The children’s answers often challenge adults' view of children.