It is said to be 1,400 years old, although this has not been scientifically proven.

There is no treatment approach that has been scientifically proven to work.

The point he mentioned just now, whether or not effects were scientifically proven, is a rather difficult one.

To date, none have been scientifically proven to be effective.

He has a standing offer of $1 million for any psychic who can scientifically prove his ability.

It has been scientifically proven that this new generation doesn't think like the old.

However, when I consider our agricultural production and the products themselves, not everything can be proven scientifically.

However, it has not been scientifically proven that there are health effects, such as the development of cancer, in the long term.

The basis of this framework has not been proved scientifically.

The success is all anecdotal; nothing has been proved scientifically.