Pediatricians could be focusing on recommending less television viewing, for instance, and more physical activity, as well as advising parents to limit children's consumption of juices and sugar-sweetened beverages.

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The Brain Activity Map project could help, for instance, look at the neural connections involved in brushing teeth.

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This was the first instance since the New Deal in which the Court struck down a federal effort to regulate economic activity under the commerce clause.

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