Louis Agassiz

Louis Agassiz was a Swiss-American naturalist and geologist known for his pioneering work in glaciology during the 19th century. He proposed that Earth experienced long periods of glaciation, where large ice sheets covered significant portions of the planet. Agassiz's research, including the study of glacial features and their effects on landscapes, helped establish the science of glaciology. His ideas challenged contemporary views about Earth's climate history, laying the groundwork for understanding ice ages and their impact on geology, climate change, and ecosystems. Agassiz emphasized the importance of direct observation and empirical evidence in scientific study.