The Paper Calculator is transparent about the fact that it uses industry averages to make estimates about the environmental impacts of paper (see “terms and conditions” on the Paper Calculator ). The Environmental Paper Network takes great care to research, update and verify the information in the Paper Calculator with independent sources. We stand by the data and environmental impact estimates provided. And as long as users properly cite the Paper Calculator, as suggested in the required citation located on the Paper Calculator home page, your statements will be clear and understood as independent estimates.
Depending on the brand ofscientific calculator, you may have a MODE key that will allow youto toggle back and forth between degrees and radians, or you will havea key that converts from degrees to radians.
Unfortunately, it is our sad duty to inform you that once you use a digital computer such as a scientific calculator or a PC or a Mac or a workstation, most of these properties are no longer true!
You only have a certain number of digits your calculator can hold in memory, so some numbers have to be rounded. At best, the scientific calculator uses a good approximation for most numbers.
The Paper Calculator is widely recognized as the most credible, most transparent, and most independent calculator of environmental impact estimates for a wide variety of paper choices. It is supported by a broad coalition of non-profit conservation organizations and other stakeholders, and is widely endorsed by leading companies as a balanced tool. The Calculator is also free to use and is backed by the scientific foundation of the multi-stakeholder Paper Task Force and their landmark report.
The Environmental Paper Network applauds paper producers with transparent and accurate information about their environmental impacts, and is enthusiastic to work with major producers to allow customers to compare results from specific mills and the industry as a whole. However, there is currently no other independent, transparent calculator in the NGO or corporate landscape that matches the comprehensive scope of the Paper Calculator. And because there is also no industry-NGO consensus on the full scope to be included in a life cycle assessment of paper, using an independent, third party tool like the Paper Calculator is the best way to ensure that you receive scientifically credible and unbiased information that is not produced by a corporation or industry group with vested interests in selling more paper.
If you do not get 13,you do not have a scientific calculator that correctly evaluatesmathematical expressions, and you will find it of littleuse in chemistry or other sciences.
The Paper Calculator is more than just a decision-making tool. It can help offices calculate their impact from green paper purchasing initiatives in the workplace. It can be used to publicize company progress in annual reports. It can add value and quantifiable environmental resource impacts to a traditional comparison of the direct financial costs between papers. And it can help track the estimated impacts of sustainability initiatives, such as large-scale paper saving efforts.
Many mills today publicize their use of “renewable energy” and most people think of wind or solar derived energy when they hear this term. But for the majority of paper manufacturers, the renewable energy source is trees, or to be more specific, black liquor (the common fuel source for virgin tree fiber paper). This is an efficient industrial process that has been used by the industry for many decades that prevents byproducts from being landfilled and displaces the use of fossil fuel for a portion of the mill’s energy use. Most paper mills report the burning of wood and pulping byproducts such as black liquor as entirely carbon-neutral. However, the assumption that there is no impact on the climate from these emissions has been found to be false by recent scientific research. The Environmental Paper Network is engaged with leading NGOs and forest carbon researchers to correct this error and to ensure that paper products follow a full and accurate carbon accounting methodology. In the future, we will be incorporating this research into the Paper Calculator. In the meantime, when a paper mill reports that it uses renewable energy, it’s important to ask what that source is for full transparency.
Carbon dioxide emissions from burning wood or pulping byproducts are not counted towards the total greenhouse gas emissions in the Paper Calculator as of yet. Institutions such as the U.S. Environmental Protection Agency (EPA) and others are currently developing scientific methods that will provide better guidance on measuring these emissions over a product's life cycle.