Should adulthood really start at 18? Surprising new research suggests that growing up takes much longer than scientists – and society – once thought.
Adolescence lasts ‘until you are 32’
Growing brains: Science suggests society may need to be more patient with young adults whose brains are still "growing up" Glossary
Milestones - Big moments in your life, such as going to secondary school or getting married.
Census - An official count of the number of people in a country. In England and Wales, a census takes place every decade.