Mysterious 'gigantic' hole in remote region spotted by helicopters over gas-rich Yamal peninsula.

Unveiled: two extinct cave lions  - dug from the permafrost - make their first appearance since Pleistocene times.

Or is it too expensive to put the environment before the need for energy?

Expert warns females should take special care, especially  once they reach menopause.

Fresh blood discovery by scientists in remains of extinct creature as experts start research this month in hunt for live cells.

Meet the woman who says: 'I will always be there for my maniac'.

Standing two metres tall, the giant deer was assumed to be extinct about 10,300 years ago, but new research finds it was still alive across Siberia.

Scientists say numbers in Lake Baikal reaching critical levels and say new commercial businesses could safeguard their future.