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A few states , such as New Hampshire , have set standards for specific pollutants such as carbon dioxide and formaldehyde . Using positron emission tomography , an advanced neuroimaging technology , Dr. Joanna S. Fowler and her colleagues at Brookhaven National Laboratory in Upton , New York , have produced images showing that smoking decreases the brain levels of an important enzyme that breaks down the neurotransmitter dopamine . Successive provincial administrations , whether Conservative , Liberal or New Democrat , have also squeezed operating grants . so often used of the UN in New York , have to be invented if they did not exist . NIDA-sponsored researchers at Mount Sinai School of Medicine , New York , have found another way to break the chain of molecular events that binds drug-taking to a familiar environment : inhibiting protein synthesis . In recent elections , small states with early primaries and caucuses , like Iowa and New Hampshire , have a disproportionate influence over the process . A group of industrial countries with relatively open economies , including the UK , Canada , Australia , the Nordic countries , and New Zealand , have shown remarkable resiliency during the slowdown and may become a strong force for the recovery of global growth . Others , such as the USA or New Zealand , have a long-held policy of providing access to the national parks with funding from government grants and low levels of fees and charges . Several states , including New York , have responded to pressure from citizen groups by either banning or imposing a moratorium on the sale of irradiated food without reviewing scientific evidence of the technology 's safety and value . Most states , including Massachusetts , Virginia , and Maryland , and cities like New Orleans , have amusement taxes on tickets sold at any venue with more than 750 to 1,000 seats .