Are we running out of children? Leaders across the world are searching for ways to persuade people to start families. In Japan, one unusual tactic has made headlines.
Japan launches dating app to boost birth rate
Childfree zone: At current rates, every 100 Japanese adults will have only 36 grandchildren. Glossary
Japanese - Japan is famous for its many centenarians, who number more than 85,000. In 1963 there were just 153.
Government - The group of people who govern - or lead - the country.
Tokyo - Japan's capital city.
Wages - The money you earn from your job.
Taxes - There are three main ways for governments to obtain money: print it, borrow it or collect taxes.
Fertility rate - The average number of children born to women of a certain age.
Global warming - The Earth is getting hotter due to climate change.