Answer: The Trans-Siberian Railway, according to international broadcaster CNN.
TNK-BP, a Russian-British company, is under fire concerning 784 environmental accidents reported in 2011, compared with 20 by rival Lukoil.
Futuristic Khanty-Mansiysk gives a new image to Siberia ahead of shale revolution.
The beaches here are thronged with sun-seekers, children paddle in the warm waters — even the babushki are relaxed.
Yana on her dream to create a magazine matching Vogue, and Taya on photographing Siberian women to rival the world's top models.
Siberian airline tycoon - the Richard Branson of Russia - explains why he is stepping in to rescue stricken Transaero.
American star asks to see a typical village in Sakha Republic as he speaks of pride in his Russian roots.