Greenpeace claim authorities underestimate the scale of destruction, amid warnings of lack of resources to fight fires.
Northern territories ‘will become arable farmland in 20-to-30 years', and will have to adapt - fast.
Officials deny any risk of atomic contamination from the site in Sakha Republic.
And take part in scientific experiment to PROVE that the leaking of harmful greenhouse gases in the Arctic can be slowed.
Worried about the rapid destruction of permafrost from global warming? Here's how you can counter it by restoring the woolly mammoth habitat.
Arctic permafrost is degrading much faster than expected, warn scientists from the extreme north of Yakutia.
One region alone - Yakutia - has 5 million tons scrap metal dumped in polar regions, an ugly Soviet legacy.
Map of shame: Greenpeace highlights junk and debris in dozens of sites across the 'pristine' environment.
The BIOS-3 closed ecosystem in Siberia sustains human life autonomously by creating a micro-Earth.