180 metre-long causeway built in sea to reach stricken tanker to prevent more pollution.
Rescued birds die despite efforts to clean them after major slick from tanker on coast of Sakhalin.
Russian officials refused to allow the vessel to enter the Northern Sea Route which Greenpeace dubbed 'a thinly veiled attempt to stifle peaceful protest'.
Six campaigners staged a dramatic pre-dawn raid on Gazprom early today, clambering onto the company's floating production base in the Pechora Sea.
Russian ecologist says his undercover trip shows Arctic ecosystem is irreversibly damaged, as whistleblower in ecological watchdog quits and leaves town.
Toxic fuel from 21,000 ton leak reaches pristine lake, bypassing floating booms, as rivers of diesel pollution cover-up is exposed.
Fear that thawing permafrost caused damage to storage tank.
Living bacteria found in permafrost - '3.5 million years old' - is 'scientific sensation' which allows 'mice grannies' to reproduce.
New cities and industries could be created from construction of high-speed railway and motorway routes spanning whole of country.