History Channel - How the Earth Was Made Series 2 - BluRay (2010) Part 4 Sahara

From the Big Bang to today, explore Earth's 4.5-billion-year history of unimaginable timescales, incredible life forms, radical climates, and mass extinctions. Spectacular on-location shooting, evidence from geologists in the field, and clear, dramatic graphics combine in Season Two of this stunning series from HISTORY to show how immensely powerful, and at times violent, forces of geology have formed our planet. This season, HOW THE EARTH WAS MADE goes back in history– from 4.5 billion years ago to today– peeling back layers of rock, filling up river canyons, parting the oceans, and levelling mountains and volcanoes to investigate the origins of some of the most well-known locations and geological phenomena in the world. With rocks as their clues and volcanoes, ice sheets and colliding continents as their suspects, scientists launch a forensic investigation that will help viewers visualize how the Earth has evolved and formed over millions of years. From a once seething, hellish mass of molten rock to the world that inhabits life today, take a rollercoaster ride through the entire history of Planet Earth. Its 4.5 billion year epic, a story of unimaginable timescales, earth-shattering forces, incredible life forms, radical climates and mass extinctions. Discover how the continents were formed, canyons were carved, and why the world's animals live where they do. The series examines some of the most well-known locations and geological phenomena in the world, including the Grand Canyon, Vesuvius, Sahara, the birth of the Earth, Yosemite, Death Valley, Everest, and the Pacific Ring of Fire. Using interviews with experts, geological evidence, and computer generated graphics, the series explains in an easy-to-understand way how those locations and geological phenomena have been shaped by the immensely powerful, and at times violent, forces of geology. Experience all 13 episodes of this landmark series for the first time on Blu-ray.

Part 4 Sahara

Scientists present evidence that the Sahara Desert periodically transitions from desert to a lush green environment and back. They also present theories about why this happens. Africa's Sahara Desert is the size of the United States, making it the largest desert in the world. It's also the hottest place on the planet. But now an astonishing series of geological discoveries has revealed this searing wasteland hides a dramatically different past. Scientists have unearthed the fossils of whales, freshwater shells and even ancient human settlements. All clues to a story that would alter the course of human evolution and culminate in biggest climate change event of the last 10,000 years.

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