These rockets use experimental motors like nitrous oxide.

3 The anthropogenically produced greenhouse gases include carbon dioxide (CO2) methane (CH4) nitrous oxide (N2O) hydrofluorocarbons (HFCs) perfluorocarbons (PFCs) and sulphur hexafluoride (SF6).

Each cylinder is about 10 percent ancient air, a pristine time capsule of greenhouse gases carbon dioxide, methane, nitrous oxide all unchanged from the day that snow formed and first fell.

You can take virtually any parameter that matters for human well being nitrous oxide, methane, deforestation, overfishing land degredation, loss of species they all show the same pattern over the past 200 years.

Several gases, including carbon dioxide, methane, and nitrous oxide, warm the planet as their concentrations in the atmosphere increase. As the world economy grows, so do emissions of these gases, accelerating the pace of human caused climate change.

First, the economic challenge of controlling human induced climate change is truly complex. Human induced climate change stems from two principal sources of emissions of greenhouse gases (mainly carbon dioxide, methane, and nitrous oxide) fossil fuel use for energy and agriculture (including deforestation to create new farmland and pastureland).

The substitution of natural gas for coal has put the US on track to meet the Obama administration s international commitment to reduce CO2 emissions 17 below 2005 levels by 2020. Gas is also better for local air quality, owing to the absence of the sulfur dioxide, nitrous oxide, mercury, and particulates emitted by burning coal.