Siberia

A wave of cooling is moving into Siberia, with forecasters warning that the last weekend of September will bring temperatures of up to +7°C and rain to Krasnoyarsk. The abrupt end to the mild weather is drawing attention as residents prepare for autumn's first real chill and discuss the sharp temperature drop.

Researchers report that a Siberian lake underwent a rare full overturn, a complete mixing of its water layers, and the event offers a natural experiment in how microbial communities recover afterward. The findings shed light on ecosystem resilience and how lake biology responds to sudden physical disturbance, drawing attention from scientists studying climate-sensitive freshwater systems.