Some 20,000 died in 2006 and 61,000 in 2013 on the Yamal peninsula — home to the under-development Yamal LNG project — due to weather conditions brought about by climate change, the report published in Biology Letters said.

An unusually rapid retreat of sea ice in the Kara and Barents seas led to increased evaporation and humidity, which in turn caused a torrential downpour in the north of the Yamal-Nenets region.