Subsidence from old coal mine a possible cause of latest mystery hole.
Man ‘caused some of the tundra blasts forming the large holes’, says leading scientist in surprising new theory.
Map of shame: Greenpeace highlights junk and debris in dozens of sites across the 'pristine' environment.
This is the first picture of mammoth bone marrow from which scientists are seeking to extract DNA to bring the extinct giant back to life.
Angelina Sadovnikova, then 11, came across the mummified Pleistocene rodent in a cavity left by woolly mammoth tusk diggers.
Toxic fuel from 21,000 ton leak reaches pristine lake, bypassing floating booms, as rivers of diesel pollution cover-up is exposed.