The Guardian’s picture editors bring you a selection of the best photographs from around the world, including Sumatran tiger cub twins, the Rio carnival and a late winter snowstorm in Washington DC.
Northumberland, United Kingdom: The aurora borealis, or northern lights, were visible over the UK last night, pictured here at Dunstanburgh Castle.
Photograph: Owen Humphreys/PA
Washington DC, United States: People walk across the National Mall during a snowstorm expected to drop between 12cm and 20cm of snow. Temperatures dropped to -15C earlier in the day – the lowest this winter