Emergency services refuse to comment cause of extraordinary blast in the dark sky.

Experts still divided over mysterious 1,300-year-old fortress-like structure located on island in middle of lake.

Reindeer herders find more craters in the far north in a deepening puzzle for scientists. 

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

Experts to visit remote craters to solve the puzzle on their creation.

As police say lama found in lotus positon was destined for sale on black market, there are claims it was one step away from becoming a Buddha.

Preserved by ice, the 25 year old ancient woman covered in tattoos used cannabis to cope with her ravaging illness.

Mother in heart-rending nationwide appeal to find loving mother and father she can trust to raise her boy when she is gone.