But I thought you said the research would be challenging?

However, some research challenges the theory of hyperglycemia as the cause of diabetic complications.

Her research challenged the view that failure to learn stems from environmental factors like poverty, broken homes or a low I.Q.

The new research challenges the established academic consensus that there has been little or no direct link between immigration and employment levels in Britain.

In the process, the research is challenging many common assumptions about teen-agers that have long guided parents, educators and policy makers.

William died on 11 June 1302 although current historical research is challenging that date.

Recently published research further challenges the traditional biography of the artist.

Anthropological and ethnohistorical research has challenged all of these notions.

Recent research challenged the need for 6 virtues.

But research in America has challenged the mystique surrounding the famous old instruments.