Iceland deems possible Atlantic current collapse a security risk, and it’s a concern that resonates far beyond its shores. It’s a sobering thought, but it’s time we acknowledge the potential fallout from a significant disruption of the Atlantic Meridional Overturning Circulation (AMOC). This isn’t just about a slightly colder winter; we’re talking about a fundamental shift in global weather patterns, and the potential consequences are nothing short of a serious security risk.
The irony isn’t lost on anyone: some might see an AMOC collapse as a solution to global warming, if only because it could bring about a temporary cooling. The reality, however, is far more complex and dangerous.… Continue reading
Despite governmental pledges, the world remains on track for a catastrophic 2.6C temperature increase by the end of the century, according to recent reports. Fossil fuel emissions are projected to rise by approximately 1% this year, hitting a record high, even though the rate of increase has slowed due to a surge in renewable energy deployment. The weakening of natural carbon sinks, such as forests, further exacerbates the crisis. Experts emphasize the urgent need for accelerated phasing out of fossil fuels and a stronger commitment to renewable energy sources at the upcoming climate talks.
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The 2025 State of the Climate report, compiled by an international team of researchers, reveals that 22 out of 34 vital signs of the planet are at record levels, signaling alarming trends. Notably, fossil fuel consumption reached new highs in 2024, contributing to record-breaking global temperatures, and atmospheric carbon dioxide levels. Extreme weather events and ocean heat content also surged, alongside increasing wildfire-related tree loss. Although the report paints a grim picture, it also highlights the growth of renewable energy and rising public awareness, suggesting that mitigation efforts, though urgent, could still limit further warming.
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The Icelandic Institute of Natural History has confirmed the first discovery of mosquitoes in Iceland, with three specimens found in West Iceland. The insects were identified as the species *Culiseta annulata* by entomologist Matthías Alfreðsson after being collected by Björn Hjaltason, who initially spotted the first mosquito in a trap. This find is significant because this cold-resistant species can likely survive Icelandic winters, marking the first time mosquitoes have been discovered outdoors in Iceland. Scientists have anticipated their arrival for some time.
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Negotiations for a landmark deal to reduce global shipping emissions collapsed due to pressure from the United States and Saudi Arabia. The deal, which would have made shipping the first industry to adopt international emission reduction targets, was abandoned after the US threatened tariffs and Saudi Arabia tabled a motion to adjourn talks for a year. The move, viewed by many as a setback for climate action, faced strong opposition from nations supporting the original agreement and the shipping industry, which sought clear global standards. Key countries that initially supported the deal, including China, shifted their positions due to the influence of the US and other dissenting nations.
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A recent report reveals that the Earth has crossed its first catastrophic tipping point with warm water coral reefs facing long-term decline due to greenhouse gas emissions. The report, produced by scientists and conservationists, also warns of other impending tipping points, including the Amazon’s dieback and the collapse of ice sheets. While some experts question the report’s claims about coral reefs, the consensus is that aggressive climate action and improved management are needed. Scientists emphasize the urgent need to stabilize global temperatures to retain warm-water reefs and mitigate the consequences of further tipping points.
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In his inaugural statement on climate change, Pope Leo XIV addressed the “increasingly evident” impact of rising temperatures, echoing his predecessor’s stance. The Pope strongly criticized those who dismiss global warming and those who blame the poor for its effects, implicitly rebuking critics like US President Donald Trump. Speaking at a climate conference, Pope Leo called for greater global action and a rejection of indifference toward climate change. His remarks build upon the foundation set by Pope Francis’s landmark document, Laudato Si’, which brought climate concerns to the forefront of the church’s agenda.
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Recent research indicates that the collapse of the Atlantic meridional overturning circulation (Amoc) is no longer a low-likelihood event, potentially occurring within decades. The study analyzed climate models extending to the years 2300 and 2500, revealing that under high-emission scenarios, Amoc collapse occurred in 70% of the models. Even with low emissions, a shutdown was still seen in 25% of the models, underscoring the urgency of reducing fossil fuel emissions. The researchers found that the tipping point where an Amoc shutdown becomes inevitable is likely to be passed in the next 10 to 20 years.
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Scientists have observed a surprising slowdown in the melting of Arctic sea ice since 2005, despite continued increases in carbon emissions. This temporary reprieve is likely due to natural variations in ocean currents, which are limiting ice melting. While the rate of sea ice loss has slowed, the overall area has still halved since 1979, and scientists stress that the climate crisis remains a serious threat. Researchers caution that this slowdown is temporary, and melting is likely to accelerate again in the coming years, continuing to impact the region and contribute to global heating.
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The European Union’s Copernicus Climate Change Service reported that July was the third-warmest on record, following two consecutive years of record-breaking temperatures. Despite a slightly lower global average, extreme weather events persisted, highlighting the ongoing effects of a warming world. The average global surface air temperature in July was still significantly above pre-industrial levels, and the 12-month period ending in July exceeded the 1.5°C warming threshold. The agency emphasized that unless greenhouse gas emissions are reduced, extreme weather events are likely to continue.
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Matt Underwood 
John Q. Hosedrinker