More than 400 volunteers from across Russia on Sunday cleaned up the world famous lake.
Viewers can watch life in the depths of Lake Baikal round the clock.
Driving over the ice on Siberia's lakes and rivers is safe in deep winter - but in April?
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.
Can the world's oldest and deepest lake finally realise its potential as a world class venue?
Poaching threatens the species which provide livelihoods for thousands around the lake.
Famed for the purest water on the planet, but this 'is no longer true' with 'no drinking' warning in southern part of lake.
Concern over world's oldest and deepest lake as nasty odour and green algae discourages sunbathers in Buryatia.
Government announces $1.8 bln package, while volunteers from all over the wolrd collect more than 450 tonnes of trash from the shoreline of the unique lake.