Recent research indicates that the Thwaites Glacier in Antarctica, often referred to as the 'Doomsday Glacier', is experiencing accelerated melting that could lead to its collapse and significantly raise global sea levels by the 23rd century. Scientists from the International Thwaites Glacier Collaboration warn that this massive glacier, which is about the size of Great Britain, currently contributes 8% to global sea level rise at a rate of 4.6 mm per year. If Thwaites were to collapse, sea levels could rise by up to 3.3 meters (approximately 10 feet), threatening coastal cities worldwide, including parts of London. The glacier, which has been retreating for over 80 years, is influenced by warming ocean temperatures and has shown an alarming increase in its retreat rate over the past three decades. Experts emphasize that while reductions in greenhouse gas emissions could mitigate some effects, the current projections for the glacier remain grim due to additional unknown factors affecting its stability. The urgency of climate intervention is underscored as scientists strive to predict the implications of these changes for millions of people living in coastal areas.