The video transcript from "ExtinctZoo" details Antarctica's dramatic transformation from a warm, lush environment teeming with diverse life, including dinosaurs and early mammals, to the frozen desert it is today.** The video explains how Antarctica was once connected to other continents, fostering unique ecosystems with giant penguins, terror birds, and ancient sharks. **Climate shifts, potentially triggered by the continent's isolation and the formation of the Antarctic Circumpolar Current, led to a significant cooling period and the expansion of ice sheets.** This ultimately caused a mass extinction, leaving only the hardiest species to survive in the increasingly frigid conditions. **Despite its current icy state, the transcript reveals a fascinating history of a vibrant "lost world" with periods of intense warmth and unique evolutionary developments.**

Watch here : YouTube - ExtinctZoo