Climate News Today — October 21, 2026

As the climate crisis deepens, communities around the world are taking action to mitigate its effects and restore the natural balance. In Michigan, three tribes are working to reintroduce a fish species that disappeared 100 years ago, highlighting the importance of preserving biodiversity and ecosystem health. Meanwhile, in the UK, climate campaigners are expressing frustration and disappointment over the approval of the Jackdaw gasfield, which they argue is a step backward in the fight against climate change. The decision has been questioned, particularly given the urgent need for countries to reduce their greenhouse gas emissions.

The UN has sounded the alarm, warning that the world must cut emissions by 18% in just four years to have any hope of limiting warming to 1.5C above pre-industrial levels. However, a new report from the UN Environment Programme suggests that this goal may no longer be achievable without a period of "overshoot," where temperatures temporarily exceed the 1.5C limit before being brought back under control. As communities like the Norwegian village experiencing some of the fastest warming on Earth look for ways to adapt and mitigate the impacts of climate change, the need for swift and decisive action to reduce emissions and transition to a low-carbon economy has never been more pressing.

Today's signal:
• In Michigan, 3 tribes are on a mission to bring back a fish that disappeared 100 years ago (grist.org)
• Climate campaigners condemn ‘maddening’ decision to approve Jackdaw gasfield (theguardian.com)
• Wednesday briefing: ​Why has Jackdaw been approved in the middle of a climate crisis? (theguardian.com)
• This Norwegian village is one of the fastest-warming places on Earth. How can its people save it? (theguardian.com)
• World must cut emissions by 18% in four years ‘to find our way back’, UN says (theguardian.com)
• UNEP: Opportunity has ‘been lost’ to meet 1.5C warming limit without ‘overshoot’ (carbonbrief.org)