Sentence examples similar to any unresolved problems from inspiring English sources

Nonetheless, how OXT regulates adult neurogenesis remains an unresolved problem.

But for me this was an unresolved problem.

Coloration of PET, however, remains as an unresolved problem.

However, overheating is still an unresolved problem during the summer.

For the companies, the casks are a reminder of an unresolved problem.

Existence of these global bounds had been an unresolved problem even in the Euclidean case.

The editors of a 2000 book, "Munchausen Syndrome by Proxy Abuse: A Practical Approach," warn doctors that "factitious illness should be considered in any unresolved clinical problems in childhood".

There are still some unresolved problems, however.

English football has its own unresolved problems.

Nevertheless, business use of instant messaging has some unresolved problems.

But both it and loop quantum gravity harbour unresolved problems.