I always learn something new at a great museum like Chicago's Field Museum, and today's visit was no different.
Going through the new "Mammoths and Mastodon" exhibit, I learned that there are five primary theories about what killed the mammoths and mastodons, the last of which disappeared in Siberia about 3,000 years ago:
1. Climate Change
2. Disease
3. Over hunting
4. A meteorite
5. Goldman Sachs
Apparently, scientific evidence is leaning towards theory #5.
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