Dean's World

Defending the liberal tradition in history, science, and philosophy.

Monday, January 7, 2008

Great Balls Of Fire


Project Orion, re-imagined and visualized.

I'm always amazed by the fact the proposed Orion "super" spacecraft had a mass of 8 million tons. For comparison, a modern supercarrier is about 100,000 tons.

(via TalkPolywell)

UPDATE: More video on Project Orion here.

UPDATE: In the comments, CaliforniaJOSH raises an objection:
Dishman, in all fairness, you must understand that the moon has a thriving ecosystem, and any human intervention could in theory turn it into a lifeless hunck of dead rock and dust.

Friday, January 4, 2008

Indicting The Lancet on Iraq

A case for gross scientific incompetence. With more background here. (Via Glenn.)

I think it was made obvious what The Lancet's really about for quite some time, based on the hate-based lunatic rantings of one of its editors, Dr. Richard Horton:

The world of peer reviewed publications, especially high profile ones, is increasingly dominated, it appears, by political partisanship and economic self-interest.

Thursday, January 3, 2008

The Great Global Coldening of 2012?


A Russian coldenist speaks:
Astrophysics knows two solar activity cycles, of 11 and 200 years. Both are caused by changes in the radius and area of the irradiating solar surface. The latest data, obtained by Habibullah Abdusamatov, head of the Pulkovo Observatory space research laboratory, say that Earth has passed the peak of its warmer period, and a fairly cold spell will set in quite soon, by 2012. Real cold will come when solar activity reaches its minimum, by 2041, and will last for 50-60 years or even longer.
...
The temperature of the troposphere, the lowest and densest portion of the atmosphere, does not depend on the concentration of greenhouse gas emissions—a point proved theoretically and empirically. True, probes of Antarctic ice shield, taken with bore specimens in the vicinity of the Russian research station Vostok, show that there are close links between atmospheric concentration of carbon dioxide and temperature changes. Here, however, we cannot be quite sure which is the cause and which the effect.
Sorokhtin makes some other points, such that the CO2 concentration might affect atmospheric volatility but not temperature, and that the oft-mentioned CO2 lag in historical temperature cycles may be explained by greater CO2 emissions from warmer oceans.

I found this gray-body emissivity argument interesting as well. Is it even possible for CO2 to warm the planet?

Overall, I have to be a bit suspicious of the climate change industry. Yes, there are lots of scientists involved, but there are lots of ideologically-driven environmentalists involved too, and billions in funding are at stake. It still bothers me that James Hansen once worked on a project that ascribed global cooling to manmade pollutants; that really makes climate change activism look like a solution in search of a problem.

Guess we'll find out who's right in a few years.