On 1 May, the 'Ob Sea', close to Novosibirsk, was completely clear of ice.
It takes truly extreme cold for Yakutian students to miss out on their classes: but the big freeze has arrived (except in Chersky).
As temperatures sunk to minus 50C and below, schools and kindergartens were closed for the world's hardiest children.
It almost looks like a lawn mower being pushed across a frozen river. What's going on?
Attraction in Altai region never fails to put on its annual show for tourists.
It was described as a 'v-e-rrry hot day' in fashionable snow resort Sheregesh as 700 women and men (in swim suits) smashed the world record.
Private helicopter brought in to located Tyva Avia aircraft that had 13 people on board in remote Siberia.
World's coldest region defies its stereotype.
Summer 2020 follows unusually hot and dry spring in swinging between the extremes.