Residents complain of 'severe carbon monoxide poisoning' as satellite images show blanket of smoke across eastern Siberia.
Greenpeace concern as firefighters say they cannot extinguish 3 year blaze with smoke visible from space.
Hi-tech technologies have been used to track smoke plumes from forest fires burning across eastern Russia as they cross the Pacific.
Oilmen forced to stop work after being trapped in 'horseshoe' of burning taiga, as pall of smoke smothers Irkutsk region where state of emergency imposed.
'Scary' scenes as fumes from burning forests cover Lake Baikal, with people - and bears - fleeing 'Apocalypse'.
Private zoo in Irkutsk engulfed by flames and smoke despite minus 35C cold.
US National Weather Service claims smoke haze from deadly inferno has crossed the Pacific.
Roads blocked, planes diverted due to low visibility, schools shut, people advised to stay home.
Wildfires ablaze early in year due to lack of snow, posing threat to railway in Russian Far East.
Yakutsk, currently hosting the Children of Asia International sports games was forced to halt arrivals and departures.