Let us know which thumbnail you prefer. We discuss your votes and comments every week in a team meeting. We then test out multiple thumbnails for our videos to see what the subscribers on YouTube like too, we love to get your feedback to help us pick the perfect thumbnail. In this video we go back 230 million years ago to the arid Pangaea supercontinent. Where a volcano would trigger an extinction event resulting in a 2 Million years long thunderstorm.
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