Merck faces heavy competition in almost every area of brain research, especially from Pfizer, which has been working on substance P blockers for depression and on new, safer antianxiety drugs.

FORBES: Betting on the brain

This month, we pay tribute to all those working to prevent substance abuse in our communities, and we rededicate ourselves to building a safer, drug-free America.

WHITEHOUSE: The White House

But as long as Clinton's diet-substance strategy is working so well, he's not likely to hustle to appropriate Lamm's message, unless anyone seems to be buying it.

CNN: It's My Party And I'll Run If I Want To

LSD-25, the substance he had been working on.

ECONOMIST: Albert Hofmann, chemist, died on April 29th, aged 102

Working together, we can reduce the heavy toll of substance use in our cities, neighborhoods, and families.

WHITEHOUSE: Toward a Smarter Drug Policy

They are working with the Farmwatch scheme in the Test Valley to introduce a liquid substance which can be added to fuel to "chemically tag" it.

BBC: Heating oil 'tagged' to tackle rural theft in Hampshire