Yes, lots. Some date back to the beginning of human history, some are deep philosophical questions for which there are no answers and as we learn more about the natural world we find that every answer brings with it many more questions.
The mysteries and questions of Quantum Mechanics are largely unsolved.
Because the person wanted to help people.
对不起。 DUI bu qi. haha, there are so many questions about Chinese that unsolved.
The Unsolved happened in 1997.
Many, and each will only give rise to more questions when it is solved. Some of the most prominent, most complicated and most famous can be found at the related links.
that is the greatest unsolved mystery of them all.
The case remained unsolved.
Unsolved History was created in 2002.
Unsolved History ended in 2005.
The Unsolved was created on 1997-05-02.
Unsolved Mysteries was created in 2001.
Unsolved Crimes happened in 2008.