'explore why' is a correct and usable phrase in written English.
You can use it to introduce questions about the reasons for something. For example: "Let's explore why the company decided to partner with this organization."
The study did not explore why.
The study did not explore why autism cases increased.
The study did not explore why physicians in computerized offices ordered more tests.
The Military Channel will explore why the Pentagon sustained far less damage than the Twin Towers.
They also explore why some relationships give rise to a moral queasiness and others do not.
He seems reluctant, however, to explore why Islam is such a breeding ground for these practices.
At Vox, Daniel Gros and Felix Roth explore why central banks are so unpopular.
One aim of the exhibition is to explore why German art caused such a visceral reaction.
You can also get them to explore why people have different eye colours and genetic diversity.
We took to Twitter to explore why people move, using the #whymigrate hashtag.
Secondary pupils can explore why the seasons happen with this lesson from the Guardian.
