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.
Call to locals and tourists to aid experts counter the green gunge 'polluting' world's deepest lake.
Challenge to polar doom warning from respected international expert Professor Peter Wadhams of Cambridge University.
The lake's level is falling, and Mongolian hydro plans would disrupt inflows, and could cause a 'tsunami' of water, say campaigners.
In beach resort of Listvyanka alone, 98 contaminated streams are disgorging sewage and chemical waste into the pristine waters of the world's oldest lake.