Blocking substance P triggers a molecular chain reaction that boosts levels of the neurotransmitter serotonin, apparently much more selectively than Prozac does.

FORBES: Betting on the brain

The polymerase chain reaction (PCR) is a scientific technique in molecular biology to amplify a single or a few copies of a piece of DNA across several orders of magnitude, generating thousands to millions of copies of a particular DNA sequence.

FORBES: There is No Great Stagnation