A more controversial theory is that the Yankees paid the price for bringing black players into the organization later than most other teams.

This is, to say the least, a controversial if intriguing theory.

Huggins is known for his association with the controversial theory of cold fusion.

Wrote an influential and controversial theory on the nature of the Mfecane.

He was still revising the controversial theory at his death, two years later.

The documentary examines some controversial theories as to why Elizabeth never married.

Now in a new study from Cornell, researchers report what some call the first solid evidence to support this controversial theory.

In fact, other scientists say the new study provides the best support to date for a long controversial theory of speciation.

Which confirms one of the most controversial theories about dinosaurs ever set forth.

In recent years he has become known for his controversial alternative theories of gravitation.