Posts tagged as:

CO2

One Watt, One year, One dollar
(pass it on)

March 8, 2009

For residential customers in the U.S., the average price of electricity has recently* been at $0.115 per kilowatt-hour. This works out to almost exactly $1.00 per Watt-year:
Leave a 100 Watt light bulb on for a year, pay $100.
I found this surprising when I calculated it. The number is simple, memorable, and encourages conservation. Pass it [...]

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To improve US fuel economy,
stop talking about MPG!

March 5, 2009

I want a car that uses less gasoline — fewer gallons per mile — but car makers quote fuel economy in miles per gallon instead. The resulting numbers are counter-intuitive, leading to decisions that create needless waste, cost, and CO2 emissions.
For example, upgrading from a 20 mpg car to a 35 mpg car seems about [...]

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Ocean Acidification: The Other CO2 Problem

February 1, 2009

There’s recently been another ripple of media attention to the other CO2 problem: Not climate change, but ocean acidification. In brief: The oceans absorb a portion of CO2 emissions; this mitigates greenhouse warming, but forms carbonic acid, lowering ocean pH. Acidification of the oceans impedes the formation of coral and shells, and within decades, if [...]

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Greenhouse Gases and Advanced Nanotechnology

January 1, 2009

The greenhouse gas problem is far more intractable than most people think, and although there is a solution in sight, we will need a technological revolution to implement it…. molecular manufacturing capabilities will make it possible to reduce CO2 concentrations to pre-industrial levels within a short time span.

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