Britain, wellspring of the industrial revolution, is the chief proof of this theory.

ECONOMIST: Creating economic wealth

However, all the researchers involved are keen to stress that their finding falls a long way short of proof for this theory.

BBC: Clues to massive leukaemia rise

The The Official Bob Saget Hate Page compares the cheery actor to the devil and offers up compelling written and visual proof to confirm the theory.

CNN: Flaming the famous on the Web

The charitable ways of Gates and Buffett also provide living proof that the "trickle-down theory" is in fact reality.

FORBES: Magazine Article

Theory is great, but the proof is in the pudding.

FORBES: Malkiel Shills For Indexing Again, But Backs Baidu Just In Case

When a theory emerges consistent with the facts, the proof is with science, the truth is with science.

NPR: Serenading Science In A New Rock Album

In theory, a wide range of improved materials could be made in nanocrystalline form: more proof that small is beautiful.

ECONOMIST: Nanotechnology