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Incredible before-and-after satellite images of our dynamic planet. Watch Part 1 in this series: https://www.youtube.com/watch?v=Unyu4JpzXJ4 Subscribe to TDC: https://www.youtube.com/TheDailyConversation/ Source: NASA's Images of Change: http://go.nasa.gov/2iQG005 Music: "Impact Prelude" by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100617 Artist: http://incompetech.com/ Video by Bryce Plank and Robin West Script: These impressive images showing the passing of time, help us to better understand the dramatic changes constantly happening all over our planet.

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NASA’s Stunning Images Show Earth’s Changing Landscape

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As part of its Images of Change project, NASA is featuring before-and-after images of the same place to show the effect of natural disasters, man-made structures, and climate change on different areas around the world. Evidence of a changing planet can be seen on NASA's website - Global Climate Change: Vital Signs of the Planet.

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But most changes happen so slowly we don't notice them at all. The continents slowly creep across the surface of the Earth at an average speed of eight centimeters a year. Over hundreds of millions of years, mountains form, and then slowly erode away.

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Glaciers huge rivers of ice formed when snow and ice accumulate over hundreds and thousands of years act like a big conveyor belt that pushes ice into the sea. These icy rivers move slowly over time, some eventually dumping ice chunks into the sea, a process known as calving a leading source of additional water for the world's oceans.

Some kinds of glaciers, however, calve as often as once an hour. These kinds of glaciers are called "grounded," meaning they rest on the ocean floor; others float on top of the ocean waters as they run into the sea. Scientists recently observed Alaska's Columbia Glacier undergoing a transition from grounded to floating, which dramatically slowed its calving. [ See scientists studying the glacier.]

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7 Ways the Earth Changes in the Blink of an Eye

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Glaciers huge rivers of ice formed when snow and ice accumulate over hundreds and thousands of years act like a big conveyor belt that pushes ice into the sea. These icy rivers move slowly over time, some eventually dumping ice chunks into the sea, a process known as calving a leading source of additional water for the world's oceans.