Big things have happened here on Earth all because of some small things happening on a microscopic level. Using some advanced imaging equipment, scientists have been able to take a close look and have discovered some amazing things. By doing so, we have unlocked secrets to the Earth’s past and gained a much better understanding of where it all came from. Here is a list of ten of the most important things that changed the world.

Cyanobacteria – Earths Oxygen Factory

Earth’s atmosphere used to be a thick deadly smog. These little guys killed off that smog giving us our nice oxygen atmosphere. Without cyanobacteria, the Earth would be a very different place.

Largest Volcanic Eruption in Human History

The Toba super volcano eruption was nothing like the Hawaiian style volcanoes. This eruption violently shattered the rocks and left jagged edges as seen in this close up photo.

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