17 Astounding Scientific Mysteries That Tesearchers Can’t Yet Solve

1. What is the universe made out of?
2. How did life start on Earth?
3. How did dogs evolve from wolves?
4. Can animals feel grief?
5. What will animals look like in the future?
6. What’s the secret to a great romantic relationship?
7. Where the heck does our moon come from?
8. How does sound become hearing?
9. Why don’t doctors know more about endometriosis?
10. Is there anything alive in the human poop left on the moon?
11. Was there an advanced civilization on Earth before humans?
12. What is the definition of “life”?
13. How should we define death?
14. What did dinosaurs sound like?
15. Is there such a thing as perfect internet encryption?
16. Is it safe to use weed during pregnancy?
17. How will everything end?

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