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a measure of the total amount of greenhouse gas emissions produced directly and indirectly by a person, an organisation, an event or a product.

6
votes
The guardian article mentioned by THelper to me is suspect. It cites McCaffey that claims that 62 trillion spam messages take 33 billion kWh of power. That's 2000 messages per kWh. Hmm. Let's suppo …
answered Jan 4 '15 by Sherwood Botsford
8
votes
It doesn't depend on how much you drive, although it may depend on where and how you drive. I would argue that the best use for almost any vehicle is to use it until it is worn out. If it is running …
answered Apr 2 '14 by Sherwood Botsford
1
vote
Very low. I'm going to use manufacturing costs as a proxy for environmental footprint. This is realistic up to the point that ignores extrinsic costs, and ignores financial costs. E.g. making the p …
answered Nov 27 '17 by Sherwood Botsford
4
votes
As soon as you plant a forest it starts to decay. Initially the growth rate is faster than the decay rate. At some point it reaches equilibrium. To maximize carbon capture you want to plant somethi …
answered Feb 19 '15 by Sherwood Botsford
2
votes
Contact City of Edmonton Waste Treatment. They have one of the best diversion systems in the world, at present removing better than 70% of the waste stream: Yard waste is composted. The compost is …
answered Feb 18 '16 by Sherwood Botsford
3
votes
In general these are non-trivial questions. I don't know of a single source of answers, other that possibly the SL branch of StackExchange . Your best option, I think, is to learn how to reason abou …
answered Jan 8 '15 by Sherwood Botsford
2
votes
You can work out an approximation based on percentage components and the energy cost to liquify air. Assume that the energy comes from electricity and you can derive your figures. This gives you a …
answered Mar 15 '14 by Sherwood Botsford
1
vote
The Wikipedia article on world energy use is a good place to start. It gives the breakdown by various sources. You will also have to read the electricity generation article to figure out what fract …
answered Feb 3 '15 by Sherwood Botsford
4
votes
Time span. Most of the others are short term. CO2 ultimately depends on the rate biomass increases, and the speed it mixes into the deep ocean. Processes that take very long periods (thousands of y …
answered May 25 by Sherwood Botsford