The Chicago Cubs, one long-held theory goes, cannot win pennants because of the many day games they play in the hot summer months.

This violates a long-held theory that nothing travels faster than light.

The results exploded the long-held theory that the moon once formed part of the Earth.

In order to succeed you may need to change some of your ideas, and cast a few long-held theories out of the window.

Regular readers may recall my long-held theory that everyone has at least one splendid tale involving being locked in a lavatory.

Adult neurogenesis is an example of a long-held scientific theory being further studied.

The long-held theories of Newton were shown not to be correct in all circumstances.

The data supports the long-held theory that they were instrumental in the colonization of land by plants.

Scientists say the discoveries complement each other and add great support to the long-held medical theory that widespread mental illness is influenced by heredity.