

How The Earth Was Made
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S2 F1 – Grand Canyon
23. November 200944 Min.Almost 200 miles long and over a mile deep, this deep scar in the American Southwest is easily visible from space.Gratiszeitraum für HISTORY Vault, oder Titel kaufenS2 F2 – Vesuvius
30. November 200944 Min.Mt Vesuvius is the world's most dangerous volcano, and it threatens three million people. It was responsible for the most famous natural disaster of ancient history, the eruption that destroyed the Roman city of Pompeii.Gratiszeitraum für HISTORY Vault, oder Titel kaufenS2 F3 – Birth of the Earth
8. Dezember 200944 Min.Four and a half billion years ago the Earth formed from dust in space to become a molten ball of rock orbiting the Sun.Als Kauftitel verfügbarS2 F4 – Sahara
14. Dezember 200945 Min.Africa's Sahara is the largest desert in the world and the hottest place on the planet. Explore recent geological discoveries that reveal this searing wasteland's hidden past.Gratiszeitraum für HISTORY Vault, oder Titel kaufenS2 F5 – The Rockies
14. Dezember 200944 Min.From Alaska to New Mexico, the Rockies are one of the great mountain belts of the world--caused by tectonic forces of the Pacific Plate pushing against the North American continent.Gratiszeitraum für HISTORY Vault, oder Titel kaufenS2 F6 – Yosemite
21. Dezember 200944 Min.The Sierra Nevada, North America's highest mountain range, contains one of the most awe-inspiring geological features on the planet: Yosemite Valley. How was this extraordinary site created?Gratiszeitraum für HISTORY Vault, oder Titel kaufenS2 F7 – Ring of Fire
18. Januar 201044 Min.The single longest linear feature on Earth, the "Ring of Fire" is a 25,000-mile long string of active volcanoes stretching almost the entire length of the Pacific Ocean—one of the most awesome sights on Earth.Gratiszeitraum für HISTORY Vault, oder Titel kaufenS2 F8 – Everest
18. Januar 201044 Min.Mount Everest is the tallest and biggest mountain on earth, as far removed from sea level as it's possible to be, and yet its sedimentary layers contain fossils that were once creatures that lived on the ocean seabed.Gratiszeitraum für HISTORY Vault, oder Titel kaufenS2 F9 – Death Valley
25. Januar 201044 Min.It is not only a place of natural splendor but a geologic treasure trove as well. However, Death Valley is being pulled apart and the floor is collapsing -- and lower than sea level.Gratiszeitraum für HISTORY Vault, oder Titel kaufenS2 F10 – Mt. St. Helens
1. Februar 201045 Min.The 1980 eruption of Mt. St. Helens shocked America. More than 30 years later, scientists fear the acidic volcano may soon blow, unleashing its deadly gasses and magma again.Gratiszeitraum für HISTORY Vault, oder Titel kaufenS2 F11 – Earth's Deadliest Eruption
8. Februar 201044 Min.When greenhouse gases escaped from depressurized lava on the Earth's surface 250 million years ago, the massive global warming that ensued wiped out 95% of the planet's species...and paved the way for dinosaurs.Gratiszeitraum für HISTORY Vault, oder Titel kaufenS2 F12 – America's Ice Age
15. Februar 201044 Min.Why do we have ice ages and when is the next one due? Chart the progress of different ice ages through the history of our planet, from Snowball Earth hundreds of millions of years ago to the recent ice ages.Gratiszeitraum für HISTORY Vault, oder Titel kaufenS2 F13 – America's Gold
1. März 201045 Min.Gold dates from the time of the supernova explosion that gave birth to the building blocks of our solar system, and over the aeons geologic processes have concentrated it into various nooks and crannies around the globe.Gratiszeitraum für HISTORY Vault, oder Titel kaufen