Thwaites glacier approaches irreversible collapse

An analysis of cracks in Antarctica's Thwaites Glacier over the past 20 years indicates it is nearing a total collapse. Known as the Doomsday Glacier, this rapidly changing ice mass poses uncertainties for global sea level rise predictions.

The Thwaites Glacier in Antarctica, often called the Doomsday Glacier, stands out as one of the planet's most rapidly evolving glaciers. A recent analysis examines the expansion of cracks within it over the last two decades, pointing to the possibility of an irreversible collapse in the near future.

This glacier's behavior remains a significant puzzle in forecasting how much sea levels might rise due to climate change. Scientists highlight its role in broader environmental shifts, including impacts on geology and earth science in polar regions.

The findings underscore the urgency of monitoring such ice formations, as their instability could accelerate global changes. While the exact timeline remains unclear, the observed crack growth suggests the glacier is getting closer to a tipping point.

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The Pine Island Glacier in West Antarctica has dramatically increased its speed since 2017, driven by the breakdown of its protective ice shelf. This acceleration raises concerns about faster sea-level rise from the region. Researchers link the changes to warming ocean waters undermining the shelf's structure.

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In 2023, Hektoria Glacier on Antarctica's Eastern Peninsula retreated eight kilometers in just two months, marking the fastest such event recorded. Nearly half of the glacier broke apart due to its position over a flat underwater bedrock. The discovery, detailed in a new study, highlights vulnerabilities in other Antarctic ice features.

New studies indicate that stronger winds and warming deep ocean water have triggered a sharp decline in Antarctic sea ice since 2016. Previously expanding, the ice reached a record high in 2014 before plummeting to record lows. Researchers link this shift to wind-driven upwelling of circumpolar deep water.

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New Scientist has compiled a striking collection of images capturing key environmental events of 2025, from volcanic eruptions to glacial collapses. These photos highlight the year's dramatic natural phenomena, underscoring the impacts of climate change. The selection features scenes from Sicily to Greenland, illustrating both destructive forces and natural wonders.

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