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The Earth Story

@earthstory / earthstory.tumblr.com

This is the blog homepage of the Facebook group "The Earth Story" (Click here to visit our Facebook group). “The Earth Story” are group of volunteers with backgrounds throughout the Earth Sciences. We cover all Earth sciences - oceanography, climatology, geology, geophysics and much, much more. Our articles combine the latest research, stunning photography, and basic knowledge of geosciences, and are written for everyone!
We hope you find us to be a unique home for learning about the Earth sciences, and we hope you enjoy!
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Every year, a group of intrepid adventurers from around the world band together to deliver new motorcycles to rangers patrolling the Mongolian heartland. Without these precious vehicles, park rangers working tirelessly to protect ecologically important regions would have to prol thousands of miles on foot or horseback. Led by former U.S. National Park Ranger Robert “Mac” McIntosh, these motorcyclists make their week-long journey from the Mongolian capital of Ulaanbaatar to Otgontenger National Park, passing through stunning vistas like the Flaming Cliffs, Ongiin Khiid Monastery, and the Singing Sand Dunes.
Directed, Edited and Produced by Jeff Colhoun
Written by Ethan Cunningham
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natgeo
Video by Matthieu Paley @paleyphoto
| Heavy smog veils the downtown area of Mongolia’s capital, Ulaanbaatar. From the United States and Germany to India and China, air pollution cuts short an estimated seven million lives globally every year, according to the World Health Organization. In winter, coal stoves and power plants regularly choke Ulaanbaatar with smoke—and lung disease. The smell is acrid and inescapable. This winter authorities closed the capital’s schools for two full months, from mid-December to mid-February, in a desperate attempt to shield children from the toxic air. It’s unclear how effective that measure is. On bad days, handheld pollution monitors max out, as readings soar dozens of times beyond recommended limits. Levels of the tiniest and most dangerous airborne particles, known as PM2.5, once hit 133 times the World Health Organization’s suggested maximum. This video is part of a story I recently shot for @natgeo cities issue. Please visit my profile @paleyphoto for a link to the story
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Gastroliths

This awesome sample of the ceratopsian dinosaur Psittacosaurus was originally found in the Cretaceous aged rocks of Mongolia, and it is currently on display at the American Museum of Natural History in New York. The ribs of this dinosaur are filled with rolled, polished, somewhat smooth stones. These stones were once gastroliths, swallowed by the dinosaur to aid in digestion by grinding and mixing food. In modern animals, bits of rock are found in the digestive tract all the time. Unsurprisingly since you’re looking at a dinosaur fossil, these stones are most commonly found inside birds. They range from stones even larger than these to tiny bits of sand. Many organisms use them for that purpose, but there are other proposed reasons to find rocks in an organism’s digestive tract. Some ocean-going organisms including sea lions and crocodiles have been proposed to swallow stones for buoyancy, although this is controversial as some stones could just be swallowed accidentally while feeding and not every member of a population will be using them at once. Other organisms will even grow stones inside them, sometimes to store minerals for later use and sometimes to cover an irritant as happens when oysters form pearls.

This sample is particularly special because you can actually see the gastroliths in position, verifying that this organism swallowed them. Polished stones that could have been swallowed once are found in many sedimentary units around the world, including units that contain huge numbers of dinosaur fossils. However, if you find a polished stone in a sedimentary unit but it isn’t literally inside the dinosaur, it is obviously difficult to prove it was once swallowed, as sedimentary processes can polish stones as well.

-JBB

Image credit: Ryan Somma https://flic.kr/p/5miJX1

Source: facebook.com
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'The Journey' is a short travel movie of one of the most amazing experiences of my life: from August to October 2017, I travelled all the way overland from my hometown in Belgium to southern China, and back. Using only trains, buses and boats, I travelled right across Europe, to the magnificent Altai Mountains in Russia and along the famous Trans-Mongolian Railway, through the vast plains of Siberia, along the crystal-clear waters of Lake Baikal, through the endless steppes and the Gobi Desert of Mongolia, along the impressive Great Wall of China, and finally to the unique karst landscapes of southern China... and all the way back again. Visiting 8 countries in total and spending approximately 335 hours on trains, this truly was the adventure of a lifetime, an epic journey I will never forget and for which I'll be forever grateful.
It was not easy to squeeze more than three hours of video and timelapse footage of an almost three-month trip into an 'aftermovie' of less than 7 minutes, but I hope this short film makes you dream away for a short while, and wonder about the incredible beauty of our world I got to witness.
Thanks to everyone who made this trip possible, and for making it such an awesome experience!
Music: Adi Goldstein - The Long Journey Home
Enjoy!
Location list: 00:10Latgale, Latvia 00:16Novosibirsk Oblast, Russia 00:25Balezino, Russia 00:33Novosibirsk Oblast, Russia 00:38Olkhon Island (Lake Baikal), Russia 00:43Elsen Tasarkhai, Mongolia 00:47Gubeikou Great Wall, China 00:53Ak-kem Valley, Altai Mountains, Russia 01:01Perm Krai, Russia 01:06Töv, Mongolia 01:17Sitting Dragon Gorge, China 01:22Yongding River Valley, Yin Mountains, China 01:26Tsenkher, Mongolia 01:30Orkhon Valley, Mongolia 01:39Orkhon Waterfall, Mongolia 01:43Övörkhangai, Mongolia 01:49Orkhon Valley, Mongolia 01:54Irkutsk, Russia 01:57Battsengel, Mongolia 02:03Övörkhangai, Mongolia 02:07Ak-kem Valley, Altai Mountains, Russia 02:15Yulong River, Yangshuo, China 02:21Sylva River Valley, Ural Mountains, Russia 02:26Zhangjiajie National Forest Park, China 02:31Riga, Latvia 02:35Terelj National Park, Mongolia 02:41Guangxi, China 02:48Gobi Desert, Mongolia 02:53Inner Mongolia, China 02:57Khangai Mountains, Mongolia 03:01Mutianyu Great Wall, China 03:09Ust-Kansky District, Altai Mountains, Russia 03:13Omsk, Russia 03:20Zhangjiajie National Forest Park, China 03:28Turaida Castle, Latvia 03:33Gobi Desert, Mongolia 03:46Belukha Mountain, Altai Mountains, Russia 03:50Latgale, Latvia 03:59Ulaanbaatar, Mongolia 04:08Moscow, Russia 04:17Arkhangai, Mongolia 04:33Tsenkher, Mongolia 04:42Republic of Buryatia, Russia 04:51Yangshuo, China 05:00Olkhon Island (Lake Baikal), Russia 05:13Lake Baikal, Russia 05:17Kultuk (Lake Baikal), Russia 05:25Beijing, China 05:34Tyumen Oblast, Russia 05:39Khorgo Volcanic Field, Mongolia 05:43Laodaowan Gorge, China 05:48Longji Rice Terraces, China 05:52Yarlu Valley, Altai Mountains, Russia 05:56Jiankou Great Wall, China 06:00Kharkhorin, Mongolia 06:05Tianmen Mountain, China 06:09Baltic Sea 06:18Riga, Latvia 06:22Yekaterinburg, Russia 06:26Tsenkher, Mongolia 06:33Republic of Buryatia, Russia
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Flaming Cliffs One of the most famous dinosaur sites on Earth, this Cretaceous redbed sandstone was discovered in Mongolia's Gobi desert by Roy Chapman Andrews in his 1922 expedition. Known in Mongolian as Bayanzag, extensive discoveries of fossils such as protoceratops (whose skeletons some think was the model for the mythical monster of classical times known as a griffin), the first dinosaur eggs and oviraptor established it as an important site. The dinosaurs were trapped under collapsing dunes, as the Gobi was already a desert with a similarly harsh climate to today's. Access was blocked during the time of political turmoil, and later only allowed to Communist scientists until the fall of the wall in 1989 and Mongolia's independence allowed renewed exploration. Loz Image credit: Zoharby

Source: facebook.com
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