Brazil's most populous region facing worst drought in 80 years
Brazil's Environment Minister Izabella Teixeira has said the country's most populous region is experiencing its worst drought since 1930.
Describing the situation as delicate and worrying, authorities have urged residents in major cities to save water.
The drought is also having an impact on energy supplies, with reduced generation from hydroelectric dams.
Laura Westbrook reports.
24 Jan 2015