The Estufa Dos por Tres reduces global warming black soot & you can see the difference.

  • Black carbon particulates also cause global warming.
  • Soot has gathered in the rafters of this thatch house.
  • Black carbon on the chimney top of a traditional stove.
  • Years of soot build up on this kitchen's walls.
  • You can really see the particulate matter in this "chimney".
  • White stove, white walls, and she can wear white trousers with her Dos por Tres.
  • Her kitchen will stay white because of her new stove. Traces of her old way of cooking are on the roof.
  • 100% of respondents tell us the air is cleaner and their homes are cleaner with their new Dos por Tres.
  • For the first time in her life, her kitchen is clean.
  • There;s no smoke on the walls or roof now that she cooks with her 2x3.

The Dos por Tres burns efficiently and reduces emissions of soot particulates by 79% vs. a traditional stove. Soot, or black carbon, is also a source of global warming.

The WHO reports that nearly 10% of the wood burned in a traditional-type stove is lost as particles called "products of incomplete combustion" (PIC's). When wood burns it releases a number of compounds into the atmosphere that are related to global warming. They include well-known gases such as CO2 and Methane as well as PIC's that consist of elemental carbon (or soot) produced in flaming fires and organic carbon produced in smoldering fires (McCarty, Nordica, A Laboratory Comparison of 5 major types of biomass cookstoves June, 2008).

PIC's also contribute to Global Warming. Elemental carbon (EC), soot, or “black carbon,” has a global warming potential 680 times that of CO2 (McCarty, N.). Black carbon was recently identified in the New York Times (Rosenthal, E., April, 2009) to be “emerging as a major and previously unappreciated source of global climate change. Replacing primitive cook stoves with modern versions that emit far less soot could provide a much needed stopgap while nations struggle with the more difficult task of enacting programs and developing technologies to curb carbon dioxide from fossil fuels.”

Numerous scientific studies support this statement. In the same study cited above, Nordica McCarty noted that the BBC reported, “Clouds of pollution over the Indian Ocean appear to cause as much warming as greenhouse gases released by human activity (BBC, 2007).” McCarty goes on to explain that such clouds are composed primarily of soot, or black carbon particles, whose “dominant source… is cooking fires.” (Biello, Scientific American, 2007).

Dr. Kirk R. Smith, Professor, University of California, also points to particulate matter emissions as a contributor to global warming:

Simple stoves using solid fuels do not merely convert fuel carbon into carbon dioxide (CO2). Because of poor combustion conditions, such stoves actually divert a significant portion of the fuel carbon into products of incomplete combustion (PICs), which in general have greater impacts on climate than CO2. Eventually most PICs, are oxidized to CO2, but in the meantime they have greater global warming potentials than CO2 by itself. Indeed, if one is going to put carbon gas into the atmosphere, the least damaging from a global warming standpoint is CO2; most PICs have a higher impact per carbon atom (Greenhouse Implications of Household Stoves, 2000, pg 742).