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The U.N. asked more than 14,000 people in 14 countries on five
for its report. A key
was the global
crisis. The high
of having children is the biggest
for not having children. Many couples want children, but cannot
them. One in five adults think they will not be able to have the
of children they want. Other reasons for
birth rates include low salaries, expensive housing, and worries about the
of our world. One solution to this crisis is "family-friendly" policies, like cheaper childcare and paid
for all carers.