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B. Concern over Fine Particle Air Pollution

Narrator: This is Science Today. A recent NYU School of Medicine study has found that fine particle air pollution significantly raises the risk of dying of lung cancer or other lung and heart diseases. While the Environmental Protection Agency has issued rules regulating this type of pollution, Lara Gundel, a scientist at the Lawrence Berkeley National Laboratory, says there's been some debate.

Gundel: Because the generators of the particles are typically industries and they would like to have as little regulation as possible. They don't want to have onerous regulations. So there has been controversy about what level should be regulated and what's the scientific basis for the regulations in the Clean Air Act.

Narrator: At the Lab, Gundel has developed a novel air sampler that may shed more light on these atmospheric pollutants.

Gundel: I guess the innovations we made were a way to separate the gases and particles accurately and then to be able to collect and measure the particles and the gases separately and accurately.

Narrator: For Science Today, I'm Larissa Branin.