Okay, so we all would like to save the planet, save the environment, and save a buck on heating and cooling. The price of heating gas is rising. So, how can I decide whether electric heaters are more cost effective than the gas furnace? How do I compare gas company…
What kinds of voters are we? It’s hard to tell by looking what kind of candidates we elect. After all, we usually only have two viable choices; we often hold our noses and vote for the “lesser of two evils.” Many potential candidates never appear on the ballot, thanks to our horrifically corrupt political system, a system that requires a candidate to have corporate money in order to seen as viable by the corporate-owned media. It is a ludicrous and vicious circle.
Even acknowledging the severely limited choices we have at the polls, how well do we vote? Do we prepare ourselves carefully before entering the voting booth? Do we work hard to expose ourselves to a wide range of perspectives before voting or do we fall prey to the availability heuristic, voting on the basis of highly suspect political ads and intellectually vapid local “news”? Do most voters take time to carefully deliberate on the long-term risks and benefits of the political positions touted by the candidates? Apparently not, based upon the ubiquity misleading attack ads that invite unreflective scorn rather than a deliberate consideration of the issues.
Another bit of evidence suggesting that many of us vote without enough preparation occurs whenever citizens vote for lesser known candidates and issues. On numerous occasions, people have admitted to me that they voted for or against a particular candidate (or issue) about whom (which) they knew nothing at all. In Missouri, this happens all the time when circuit judges seeking …
Absolutely, according to this article in Popular Mechanics. Would Americans buy such a car, if available? That’s an entirely separate question, according to the article. BTW, Smart already sells a 60 mpg vehicle. That's the desiel version, though. The gas version gets you only 40 mph. Here are stats on…
Last week, at Washington University, I attended a lecture by architect Edward Mazria, who speaks nationally and internationally on the subject of climate change and architecture. Mazria’s organization, Architecture2030 is dedicated to “slowing the growth rate of greenhouse gas emissions and then reversing it over the next ten years.” His proposals are getting lots of attention among architects.
As he states at his website, it is imperative that we deal seriously with CO2. It will
require immediate action and a concerted global effort. As Architecture 2030 has shown, buildings are the major source of demand for energy and materials that produce by-product greenhouse gases. Stabilizing emissions in this sector and then reversing them to acceptable levels is key to keeping global warming to approximately a degree centigrade (°C) above today’s level.
Mazria began his talk with a PowerPoint presentation that largely paralleled Al Gore’s presentation in “An Inconvenient Truth.” Here’s how he sizes things up currently:
Two profound, life changing events are converging to create the most significant crisis of modern time— the warming of the earth’s atmosphere by burning fossil fuels, and the rapid depletion of global petroleum and natural gas reserves. As these events intensify over the coming years, they will dramatically change how we live and how we relate to the natural world.
Here’s how Architecture2030 illustrates the warming of the earth (see the Architecture2030 site for better resolution):
As you can see, CO2 levels (the upper blue line) have never been as high as they …
I was perusing a back issue of Physics Today, reading an article about events at the Large Hadron Collider, when I noticed the word, “femtobarn”. It was defined as 10-39 sq.cm. or a decimal followed by 38 zeros then a one. This is pretty small.
As a midwesterner, I thought I knew the size of a barn. So I multiplied out the femto (you know, milli-, micro-, nano-, pico-, femto-) to get the quadrillion times larger 10-24sq.cm. This is a barn? I had to Google this, and found a clear article at Stanford defining it for lay-folk.
In brief, physicists in the 1940’s were often discussing the cross-sectional area of the Uranium Nucleus. They thought of calling it the Oppenheimer (too many syllables) or the Bethe (too likely to be heard as Beta). Well, most of the research was being done in the midwest, and slamming protons into this target made them think of tossing tomatoes at a barn. The name “barn” was used in a reviewed article, accepted, and it stuck. Now, why femtobarns as the standard unit? It’s just practical for their purposes, like kilometers or megabytes.
By now, if you’ve read this far, you are probably wondering, “why should we care?” Sure, it’s fun to say “femtobarn”, but what use is it in everyday life?