Can we end homelessness? In Sheffield, one charity says there will be no young people sleeping on the streets this Christmas. But around the country there are thousands who are not so lucky.
The city with no young rough sleepers
Hard life: The majority of rough sleepers in the UK are male, although some women and girls may be missing from official statistics. Glossary
Squats - When people live in empty buildings without the owner's permission.
Life expectancy - The number of years that a person can expect to live.
Local council - A group of people who organise services in a particular town or region.
Controversial - Causing a lot of angry public discussion and disagreement.