Giant airships seen as ideal way to transport heavy lifting equipment to remote mining locations.

A desperate hunt for six teenagers missing on a Tyva mountain was hampered in poor weather conditions including the threat of new avalanches. 

Ideas are clearly needed for more effective ways of countering the annual wildfire scourge, as the trend remains towards drier and hotter summers.

Videos capture trend of youngsters racing in front of traffic, often with tragic consequences.

The giant frozen spear hanging off a roof had been highlighted by TV journalists a day earlier.

Russian ecologist says his undercover trip shows Arctic ecosystem is irreversibly damaged, as whistleblower in ecological watchdog quits and leaves town.

Ambitious plans unveiled for 250km/h train that would cut travel times and drive new business and tourism between two countries.