Russia's Norilsk Nickel has admitted that fluid waste was pumped into the tundra, one month after a subsidiary polluted Arctic waterways with diesel. This time, it said workers had been suspended for "violating" rules.

A summer heatwave in Siberia saw wildfires sweep through the region, pouring unprecedented levels of C02 into the atmosphere. With temperatures in the High Arctic rising three times faster than the rest of the world, just how concerned should we be? We speak to Thomas Smith, Assistant Professor in Environmental Geography at the London School of Economics.

Arctic ice shrinks to 2nd lowest level on record

Hundreds of scientists from 20 different countries spent an entire year trapped in the ice of the Arctic, camped out in extreme temperatures. Living through months of complete darkness and the constant threat of polar bears, they studied the ice sheets around them. The German-led expedition returned last week and the immediate conclusion was that the ice on the Arctic would be gone within decades. Sea ice scientist Stefanie Arndt tells us the trip was beautiful but also a cause for concern: this could be the last big group of scientists to see the Arctic in such icy conditions.

A blanket of snow covers the streets of Houston, Texas, a southern US state more accustomed to record-breaking heat than ice. An historic cold snap has been sweeping the country for several days as a result of an Arctic blast that is causing temperatures to plummet.

The melting of ice in the Arctic is accelerating climate change and leading to exploitation that will impact everyone in the world. But our guest offers some hope. Mikaa Mered, an Arctic specialist at Sciences Po University, explains that the region also holds potential for sustainable forms of energy using green hydrogen, meaning that smart exploitation could actually help fight climate change. He joined us for Perspective.

A research team that set sail for the Arctic has warned that the tipping point for irreversible global warming may have already been triggered.

The United States Tennis Association (USTA) announced a mental health initiative for players on Tuesday, with the main draw of the U.S. Open kicking off next week.

At just 27, Diana Kidzhi is a Chief Mate -- second in command to the captain -- of a Russian nuclear-powered icebreaker, and sets the path the giant vessel will take. Kidzhi is the most senior woman in Russia's growing nuclear icebreaker fleet -- owned by state atomic energy corporation Rosatom -- which Moscow hopes will secure its supremacy over the Arctic as climate change makes it more navigable.

The minister reportedly fell off a cliff into a mountainous river while trying to save a cameraman. The official had previously served in the security detail for Russian President Vladimir Putin.

A polar bear wanders along Essen Bay on Prince George Land in the Russian Arctic as a changing climate endangers the survival of the species. The bears' hunting ground is shrinking due to melting ice amid rising global temperatures, polar bears are being pushed further in search of food making sightings more frequent.

On the south peak of the dramatic Kebnekaise massif in Sweden's far north, year after year Ninis Rosqvist is seeing the impact of a warming climate before her very eyes. And at the nearby Stordalen mire another major change to the Arctic landscape is underway, as vital permafrost thaws. The changes here may well be irreversible, but experts hope they could serve as a warning to other regions facing climate change.