Breaking Waves: Ocean News

Oceans absorb 90% of global heating, making them a stark indicator of the relentless march of the climate crisis The world’s oceans absorbed colossal amounts of heat in 2025, setting yet another new record and fuelling more extreme weather, scientists have reported. More than 90% of the heat trapped by humanity’s carbon pollution is taken up by the oceans. This makes ocean heat one of the starkest indicators of the relentless march of the climate crisis, which will only end when emissions fall to zero. Almost every year since the start of the millennium has set a new ocean heat record. Continue reading...

Forecasts suggest that global heating could create a shortcut from Asia to North America, and new routes for trading, shipping – and attack Another week, another freak weather phenomenon you’ve probably never heard of. If it’s not the “weather bomb” of extreme wind and snow that Britain is hunkering down for as I write, it’s reports in the Guardian of reindeer in the Arctic struggling with the opposite problem: unnaturally warm weather leading to more rain that freezes to create a type of snow that they can’t easily dig through with their hooves to reach food. In a habitat as harsh as the Arctic, where survival relies on fine adaptation, even small shifts in weather patterns have endlessly rippling consequences – and not just for reindeer. For decades now, politicians have been warning of the coming climate wars – conflicts triggered by drought, flood, fire and storms forcing people on to the move, or pushing them into competition with neighbours for dwindling natural resources. For anyone who vaguely imagined this happening far from temperate Europe’s doorstep, in drought-stricken deserts or on Pacific islands sinking slowly into the sea, this week’s seemingly unhinged White House talk about taking ownership of Greenland is a blunt wake-up call. As Britain’s first sea lord, General Sir Gwyn Jenkins, has been telling anyone prepared to listen, the unfreezing of the north due to the climate crisis has triggered a ferocious contest in the defrosting Arctic for some time over resources, territory and strategically critical access to the Atlantic. To understand how that threatens northern Europe, look down at the top of a globe rather than at a map. Gaby Hinsliff is a Guardian columnist Continue reading...

During black summer, my daughters were too young to know what was happening. Now, amid another Australian heatwave, they deserve answers When the forecasts for this week started to roll in, my mind immediately drifted back to Australia’s black summer. I had taken my daughters down to the pool in our estate in western Sydney, hoping for a brief reprieve from the relentless heat. The Gospers Mountain fire was raging in the Blue Mountains, but on that particular day the smoke didn’t seem too bad. Continue reading...

Citizen scientists help in University of Bonn study showing river carries up to 4,700 tonnes of ‘macrolitter’ annually Thousands of tonnes of litter are pouring into the North Sea via the Rhine every year, poisoning the waters with heavy metals, microplastics and other chemicals, research has found. This litter can be detrimental to the environment and human health: tyres, for example, contain zinc and other heavy metals that can be toxic to ecosystems in high concentrations. Continue reading...