Follow Slashdot blog updates by subscribing to our blog RSS feed

 



Forgot your password?
typodupeerror
×

Comment Re:They're Against More Than That (Score 1) 488

The only thing is that we may start to see a trend of going away from burning coal to generate electricity--the air pollution problems from coal burning will end this practice in the next 50-70 years. What will likely happen is in the short to medium term, we'll see a switch to burning natural gas (which has a tiny fraction of the air pollution and is cheap to install emission controls) and in the longer term eventually switch to a new generation of nuclear power plants that are extremely safe to run and use commonly-found thorium-232 as nuclear fuel (India and China are building test reactors to see if they can scale up what physicist Alvin Weinberg achieved in the 1960's at Oak Ridge National Laboratory; if it works, we could have enough electric power generation to last _tens_ of thousands of years).

There will be a place for solar power, but only in areas of the world where there are enough sunny days to justify its use; the southwestern USA (including California) is one such place.

Comment Re:Fine. Legislate for externalities. (Score 1) 488

I agree that's true--if you live in the part of the world where there is enough sunny days to justify its initial expense. The southwestern USA--including California--belongs in this category, along with areas around the Mediterranean Sea, much of the Middle East, and several other places.

In other parts of the world, long, cold winters and/or long rainy seasons could cut down on its usefulness. Indeed, in Japan, only the western half of Honshu, Shikoku and Kyushu have enough sunny days to justify large-scale rooftop solar installations.

Comment Re:Or they will simply get it banned or restricted (Score 1) 517

You mean "used to be cheap dirty coal." Ever since the EPA required the use of extensive exhaust emission controls to cut soot and sulfur emissions, you no longer get the infamous "acid rain" cause by sulfur dioxide gas blown downwind of the coal-fired power plant here in the USA and there are very little soot issues from burning coal. Of course, it does help that many utilities switched to vastly cleaner-burning coal from Wyoming's Powder River region in the last 40 years.

Comment Solar power only viable in certain areas, though. (Score 1) 517

Despite what some supporters think, solar power in order to be really viable have to be located in parts of the world where there are a lot of sunny days. For example, the southwestern USA has some of the best daylight conditions in the world for solar power--and the same can be said for southern Europe. Indeed, the country of Greece should have rooftop solar power everywhere, given the number of sunny days in that part of the world.

Here in California, rooftop solar power has really taken off because there are enough sunny days to justify the cost of installation. Imagine generating 15 to 30 kW of power during daytime--more than enough to run a single-family home, including air conditioning.

Comment Re:People hear "Windows 8" and run away (Score 1) 336

However, Microsoft recently showed a screenshot of a future version of Windows where the desktop UI is emphasized more again on desktop and most laptop computers. That could be a preview of Windows 9, likely coming fall 2015--a total redesign of Windows that corrects most of the UI deficiencies of Windows 8.x versions.

Comment Re:Harden the grid (Score 1) 212

Well, the Russians during the 1962 "Project K" nuclear tests studied what kind of protection necessary to mitigate the effects of an EMP, the closest thing man-made to a large-scale CME strike on the Earth's atmosphere.

The results were not promising: a 300 kT nuclear warhead detonated at an altitude of 290 km (180 miles) generated an EMP that blew out all the protection systems and even started a fire at a power-generating station along with shutting down a 1,000 km (621 mile) long underground power line. In short, what could have happened in 2012--even if the power transmission lines were disconnected just before the CME hit--would have serious damaged the electrical grid worldwide anyway.

Comment Re:Finally! (Score 1) 474

After reading Upton Sinclair's "The Jungle," the innumerable health problems with "bathtub gin" during the Prohibition era, and that kind of scary situation with Paraquat spraying of cannabis plants in Mexico in the early 1980's, that's why I made the comment originally. Indeed, the level of alcohol in an alcoholic beverage is pretty tightly controlled--usually around 5% for beer and around 75% in hard liquor for sale in all 50 states.

Besides, with USDA and FDA standards, it means that cannabis you can buy (eventually) legally won't cause health problems for all the wrong reasons.

Comment Re:Finally! (Score 2) 474

I would except the recreational drugs have to meet the same USDA and FDA standards for purity and safety for foodstuffs, legal drugs, and alcoholic beverages. In short, the cannabis you can buy legally must NOT have any potentially dangerous additives and THC levels per gram of cannabis have to be standardized. In short, welcome to the real world if you want to grow legal cannabis.

Comment We now know the precursor of eruptions, though. (Score 1) 151

I think thanks to more recent research by geologists, we now know that most volcanic eruptions occur after a series of very specific types of earthquakes around the volcano. This is why seismic sensors are placed all over many Japanese volcanic mountains, for example Mt. Aso and Sakurajima on Kyushu and both Mt. Fuji and Mt. Asama (since both mountains if there is any major eruption could seriously affect the Tokyo metropolitan region).

Comment Re:Wait until those lamers find out... (Score 1) 385

Hence my support for the molten-salt reactor fueled by thorium-232, which generates a tiny fraction of the waste you get from a uranium-fueled nuclear reactor. And the waste only has a radioactive half-life of 300 years, which means really cheap nuclear waste disposal if the nuclear medicine industry doesn't grab it first!

Comment Re:Wait until those lamers find out... (Score 2) 385

Actually, two countries--India and China--are pouring a LOT of money into make the molten-salt reactor (a nuclear reactor fueled by thorium-232 dissolved in molten fluoride salts) commercially viable. If they succeed, it could fulfill the promise of nuclear power minus the many downsides of uranium-fueled nuclear power plants.

Comment Re:Wait until those lamers find out... (Score 1) 385

I think the primary investment will the solar power (in parts of the world where the weather and enough long sunlight days make it economically practical like the southwestern USA, the Mediterranean region, much of the Middle East, Australia and western South America) and a new, safer form of nuclear reactor called the molten-salt reactor that uses commonly-found thorium-232 dissolved in molten fluoride salts as fuel.

Slashdot Top Deals

He has not acquired a fortune; the fortune has acquired him. -- Bion

Working...