Restoration workers begin to clean paintings and murals in the Painted Hall of Old Royal Naval College in Greenwich, London.
Children return to classes after last month's shootings at a US elementary school, in a neighbouring Connecticut town.
London Zoo, London
Leaf insects are among the animals at London Zoo being counted by staff as part of the zoo's annual stock take - a requirement of a zoo licence.
Poland's Kamil Stoch soars through the air during the qualification at the 61st four-hills ski jumping tournament in Innsbruck, Austria.
Residents wear masks as they search for bodies after shelling by forces loyal to Syria's President Bashar al-Assad, in Aleppo.
Taklimakan Desert, China
Snow has covered much of the Taklimakan Desert in western China since a storm blew through the area on December 26.