Lief was sold but figured he couldn't get venture capital to fund this unproved theory.

FORBES: Magazine Article

Today's warning letters are another demonstration of our commitment to remove illegal, unproved drugs from the market.

CNN: FDA warns makers of unapproved narcotics

Orszag believed that the ideas put forward by the Obama campaign were unproved.

NEWYORKER: Money Talks

The sexual harassment allegations against Herman Cain are very serious, but unproved.

BBC: Rick Perry: Oops and out

This hysterical belief in unproved theories is not new.

FORBES: Fact and Comment

Zinc fingers are still unproved outside the lab.

FORBES: Magazine Article