A new study published in Science Advances has confirmed that Gondwana, a massive landmass that existed about 550 to 500 million years ago, was indeed a supercontinent. This conclusion resolves a long-standing debate among geologists about whether Gondwana met the criteria to be classified as such. Earlier estimates had placed Gondwana at 64% of Earth's continental landmass, which is below the commonly accepted 75% threshold for a supercontinent. However, new research led by Tao Wang has uncovered previously hidden sections of Gondwana that are now buried beneath mountain ranges, increasing its estimated size to roughly 80% of the continental landmass. The study was based on a comprehensive analysis of global granite samples, which provided insights into deep crustal processes and the formation of minerals. Scientists used a special technique that measures radioactive isotopes in rocks to create an age map of the deep Earth. This analysis revealed that granites found in the Himalayas originated from a single continental block that formed between 700 and 550 million years ago and was part of Gondwana. This discovery not only expands the known size of Gondwana but also confirms its status as a true supercontinent. The formation of Gondwana had far-reaching effects on Earth’s climate and the evolution of life. Between 750 and 550 million years ago, when Gondwana was forming, the supercontinent was covered in ice and had a dry climate, with Himalayan-sized mountain ranges crisscrossing its surface. Once the various continental fragments merged, Earth’s tectonic plates had to reorganize, leading to the creation of a volcanic arc that encircled Gondwana. This ancient "Ring of Fire," similar in length to today's volcanic belt, released large amounts of gases, including water vapor and carbon dioxide, over a period of about 50 million years. These emissions played a crucial role in transforming Earth’s climate from a cold, icy state to a warmer, more hospitable one, potentially setting the stage for the explosion of life on the planet. The study highlights how the movement and collision of continents can have profound impacts on the planet’s environment and the development of life over geological time.