Agreement means Power of Siberia pipe could be delayed, it is claimed.
Both Greenpeace and the World Wildlife Fund are expressing grave concern at the risk of contamination in the Pechora Sea.
Forward-thinking Siberian city promotes itself at major convention of Asian cities.
A 44 per cent decline in diamond production was announced by Russian gem producer Alrosa.
As closed city prepares for construction of new reactor, one scientist calls for an inquiry to address environmental concerns of past 50 years.
New cities and industries could be created from construction of high-speed railway and motorway routes spanning whole of country.
Greenpeace is demanding the Russian government blocks a major Gazprom link to Shanghai across one of Siberia's most sacred wildernesses.
Russian technology is capable of delivering aircraft to land on water and ice and bringing vital links to Siberian communities, Shoigu says.