Glacial Epochs and Warm Polar Climates

Focusing on geological ages, this essay explores the Earth's climatic history, particularly during glacial epochs and warm polar periods. Authored by Alfred Russel Wallace, a pivotal figure in evolutionary theory, the work reflects his extensive travels, including four years in the Amazon, where he documented diverse ecosystems and cultures. Wallace's experiences shaped his evolutionary ideas, culminating in his 1858 theory of natural selection. This edition includes a new introductory biography, highlighting his significant contributions to natural sciences.