New study claims meat is responsible for 50% of greenhouse gas emissions. But let’s not forget, soy production is a leading cause of deforestation, a major contributor to GHG emissions. As a numbers guy who has been crunching environmental impacts for years (five of which were fueled by a vegetarian diet), I’m concerned by a certain environmental [...] [...]
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Here is the handy chart I created for an at-a-glance summary of the average American’s individual CO2 impact by category. This chart is based on two main sources — Redefining Progress and Union of Concerned Scientists both from 2000, which I subsequently updated using recent EIA energy data from the U.S. Dept. of Energy, energy [...] [...] When I was at EVO, I was tasked with creating a comprehensive environmental impact model, one that went WAY beyond the regular carbon calculator drill and incorporated a wide array of impacts — land use, waste, water and toxics. Several months of number crunching later, the Total Environmental Impact was born. For ease of reference, I’ve [...] [...] Many complex factors go into defining one’s environmental impact. Of course, small actions – like switching to compact fluorescent light bulbs or recycling plastic bottles – add up and are significant. But we intuitively know there’s more to it than that. To live sustainably we first have to understand the many different impacts of our consumption [...] [...] EVO’s Total Environmental Impact Model provides a clear picture of how our behavior and purchases in different consumption categories have dramatic effects on the environment as measured by 4 main types of impacts: CO2 and CH4 (main greenhouse gases) Land required Water & Air Pollution (not including CO2 and CH4) Fresh water required How are the different types of impact [...] [...] What is the EVO Tree all about? The EVO Tree looks simple, but it is based on the integration of several complex data models used to assess the wide range of impacts we have on the environment. The EVO tree asks you a series of questions and based on your answers will show you how “green” [...] [...] There’s quite a bit of math that goes into each one of the EVO questions. What follows is an example of how we score a question. There are 3 steps to scoring a question… STEP 1 determines the “average American” (yellow) answer. STEP 2 determines the “efficacy” of the question, that is the amount by which the [...] [...] This was my original post from back in ‘07 about why I wanted to start the blog Greendig: Greendig – a blog that cuts through the thicket of BS that is “green.” If you’re like me, you have grown tired of the incessant use of this innocent little adjective to legitimate everything from tampons to SUV’s. Those cheeky [...] [...] |
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