Antarctica — the coldest, quietest and most mysterious continent on Earth. But millions of years ago, this frozen land was alive — covered in forests, rivers and giant dinosaurs. Then the planet shifted, temperatures crashed, and Antarctica became a 2-kilometer-thick frozen tomb. But the real mystery isn’t the ice… It’s what lies beneath it. Scientists have discovered 4-million-year-old air bubbles, ancient frozen lakes filled with strange microbes that have survived without sunlight for thousan