The Greenland ice cap is losing about 270 billion tons of ice every year, a rate that has grown much faster since the 1980s. Back then, the loss was around 60 billion tons annually, but now it has risen to over 260 billion tons. This information comes from satellite data collected by the European Space Agency's CryoSat and NASA's ICESat-2 missions. The amount of ice lost each year is nearly three times the volume of Lake Geneva, a large lake in Switzerland. Scientists have found that the main cause of this melting is warmer ocean water, which contributes to about five sixths of the ice loss. Unlike melting from above due to warmer air, this process occurs from below and on the sides of the ice cap. Studies published at the end of 2023 show that this type of melting has doubled in the last twenty years. The meltwater from Greenland flows into the Arctic Ocean, contributing to rising sea levels. This is already affecting low-lying coastal areas, including parts of Florida, the Netherlands, and some Pacific islands. On the ground, the ice cap has thinned by an average of 1.2 meters between 2010 and 2023, with some areas experiencing a loss of up to 6.4 meters. One of the fastest-moving glaciers, the Jakobshavn glacier, is now retreating nearly 50 meters each day. Since the 1970s, around 11,300 billion tons of ice have melted from Greenland and Antarctica combined. This amount of frozen water is enough to cover the entire United States with a layer of ice 1.5 meters thick. While the meltwater supports the growth of phytoplankton, which is the base of the marine food chain, it also disrupts traditional fishing areas and reduces the ice floe spaces that polar bears rely on. Additionally, it continues to contribute to rising sea levels. Scientists have observed that the melting rate has increased sevenfold in just a few decades. If this trend continues or gets worse, it could have significant impacts on Arctic marine ecosystems and vulnerable coastal regions. Greenland is often viewed as an early warning sign of global climate change, with its ice cap acting like a giant thermometer for the planet, reflecting changes in global temperatures and climate patterns.