NEWS OF THE WEEK
			INFORMEX Companies at trade show note industry downturn; some believe biotech will be crucial.
			DYNAMIC ASSEMBLY Porphyrin supramolecular ring is model for light-harvesting array.
			CLARIANT With a 2002 net loss, firm will consolidate and sell units.
			PLASTIC TOYS U.S. votes to allow PVC and phthalate in toys, but the EU proposes a ban.
			INVESTIGATION NIST will examine the Rhode Island nightclub fire.
			AIDS VACCINE Clinical trial shows AIDSVAX is no better than a placebo.
			PROTEIN BINDING Antibody can take on two conformations and bind two unrelated antigens.
			TRANSFORMING PLASTIC Method yields coating with highly water-repellent surface
			EPA APPROVAL Monsanto's genetically engineered corn protects against rootworms.

COVER STORY
			CHEMICAL GENETICS Chemists explore the biological world by synthesizing diverse arrays of small molecules.

BUSINESS
			BUSINESS CONCENTRATES
			MERGERS AND ACQUISITIONS Corporate activity dropped last year compared with the boom years of the mid- to late-1990s.
			HAIR COLOR Improvements in hair dye chemistry offer more choices to consumers of all ages.
			SURFACTANTS Sasol's acquisition of Condea marries technology depth and market position.
			ANTIDUMPING IN ASIA China issues tough rulings but is becoming more precise in its regulations.
			INSIGHTS China may be the darling of foreign investors, but India should not be overlooked.

GOVERNMENT & POLICY
			GOVERNMENT CONCENTRATES
			CHEMICAL EXPOSURE Most extensive survey yet of human exposure to environmental chemicals.
			TOXICOGENOMICS National Research Council helps regulators compare data from microarray testing of chemicals.

SCIENCE/TECHNOLOGY
			SCIENCE/TECHNOLOGY CONCENTRATES
			CHEMICAL SCIENCE Envisioning how advances in chemistry and chemical engineering will contribute to a brighter future.
			FLUORINE CHEMISTRY Conference delivers findings on nontraditional topics, including enzymes and lithography.

ACS COMMENT
			CELEBRATING SUCCESS, RENEWING COMMITMENT

225TH ACS NATIONAL MEETING
			TECHNICAL PROGRAM AND EXPOSITION Highlights, description of exhibitors, and listing of technical presentations in New Orleans, March 23–27.

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