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Today, campers, we’re going to talk about global warming. If you already believe in that, you can go play outside―or stay and watch the show, if you like, but this is specifically aimed at those who don’t think the planet is changing temperature. In fact I’m going to break my normal practice and refer directly to my skeptical audience as “you.”

Before we get started, a few definitions. What I mean by global warming―more properly termed climate change or climate chaos―is the average temperature of our planet climbing, generally because of an increase in carbon dioxide in the atmosphere. The “greenhouse effect” has been pretty well proved by the example of Venus, which is in fact warmer than Mercury due to carbon dioxide.

Note that I say nothing of what’s causing this increase in CO2. That’s because the effects of the increase are much the same regardless of whether it’s a natural process or man-made. Many people have pointed out that the recent increases in CO2 levels and average temperature are well within the extremes that Earth has experienced, according to the geologic record. This is true… but irrelevant, here. Continue reading

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Self-Defense

There’s been talk about self-defense in American political/social discourse all my life. It has been a limited talk, however, dominated by limited ideas.

Usually when we talk about self-defense, we are referring to defense of one’s person, family, or property against theft or assault. There is a second and broader strand of “self-defense” talk, concerning the defense of a country, usually either the United States or Israel. Finally people speak of defending rights.

What all these usually imply or assume is that there are evil people who would harm us in a variety of ways, and that the natural recourse of good and decent people is to defend themselves violently. Almost all references to “self-defense” that I can think of regard a violent response to a violent affront. Usually there is some connection to the Second Amendment or to the military. Handguns come up frequently. The speakers usually identify as conservative.

Yet there is a far broader definition of self-defense that is equally valid, and far broader means of self-defense that just the violent resort. (I will not say “last resort,” for when the violent resort is available, it is almost never used last.) Continue reading