dr. howarth, you talked about methane, help us understand, what's wrong with methane? cows exhibit methane. >> methane comes from lots of sources. but the suingle largest source f methane is the methane gas industry. >> at least 39% or methane pollution comes from fracking. >> so what? why should we care? >> it is an incredibly powerful greenhouse gas. it's a low hanging fruit to address global warming. if we get methane under control we are far better along than co-2. i can go into more detail on that. it is a major contributor to ground level ozone. i mentioned that briefly in my statement. i should point out that ground level ozone already causes 30,000 premature deaths in the united states every year. >> methane in and of itself is not a danger except for the global warming part. >> methane is not toxic. >> but it helps create increased level of ozone. >> it leads to increased level of ozone. >> ozone is a danger. >> is ozone regulated? >> it is. >> right here in the capital region, we are subject to, nonattainment area, serious epa regulation with respect to groun

dr. howarth, you talked about nothing to help us understand, what's wrong with methane? cows exhibit methane. >> methane comes from lots of sources but the single largest source of methane to the atmosphere of the united states is human sources is natural gas but at least 39, 40% or more of methane pollution comes from -- >> so what? why do we care speak? it's an incredibly powerful greenhouse gas. it's low-hanging fruit in terms of trying to start to address global warming. if we get the methane under control, we are far better a long and co2. i can go into more detail on the. it also is a major ontributor to ground level -- i mentioned in my statement but i should point out that ground-level ozone poverty causes 30,000 premature deaths at the united states every year. >> some at the of of itself is not danger. >> yes spent but it helps create increased level of ozone? >> it definitely -- [talking over each other] >> such as benzene which is also a contributor. >> is ozone regular by the epa? >> ozone definitely is regulated. ground-level ozone is regulated spent right