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Comment Re:De plane, de plane! (Score 1) 235

Cement isn't identical with Portland Cement, although there are proposals to reduce the carbon dioxide emissions from making that, too.

Another way to go is a magnesium silicate based cement.

There's a lot that needs to be done to get us close to carbon neutral, but it's doable and we need to get started.

Comment Re:value of coal (Score 1) 235

Actually, while there is a case for not using coal just to produce energy, producing metals out of their ores is a very valid use of coal. As it is, that carbon dioxide is trapped in the mines ...

Refining iron releases a significant amount of carbon dioxide into the air. Iron ore, ferrous or ferric oxide, is heated with coke, which come from coal. The reaction produces iron and carbon oxides. We normally just let the carbon oxides go. Capturing them might be possible, but it isn't easy.

More promising is to substitute hydrogen or electricity for the coal, but this is still in the early stages of development. It should work, but iron will probably get more expensive.

Comment Re:A real comparison? (Score 1) 286

The interior of the Bolt is probably larger than the Model 3.

The Bolt does have its downsides, though. The Model 3 is faster, has better aerodynamics and probably handles better. The Model 3's charging network is much superior, especially since GM is relying on the market to supply chargers.

Nonetheless, like the Woz, I think I'd prefer a Bolt. None of them will handle four children, though.

Comment New research? (Score 1) 709

Ok, the research may be new but the broad result sure isn't. Bill Ruddiman proposed in 2003 that humans have been modifying the climate for thousands of years, mostly through agriculture and cattle raising. Mind you, if he's right, I'm glad we did. But it's warm enough now and the rate of warming is getting out of control; it's time to stop.

Comment Re:pathetic (Score 1) 448

Ok, we already knew that Bill Nye is not a scientist, and in particular not a climatologist, but let's look at what he said in detail.

As the ocean gets warmer, which it is getting, it expands.

That seems true enough.

Molecules spread apart,

Redundant with what he just said, but ok.

and then as the sea surface is warmer, more water evaporates,

There's a bit more to than that, but in the real world that's correct.

and so it's very reasonable that these storms are connected to these big effects.

That's a little fuzzy. We might guess that the rainfall goes up with the water in the air, which is around 7% over the last century or two. Seven percent isn't all that much of the recent rain in Louisiana. Other effects of global warming might raise or lower that estimate significantly.

Comment Re:Is he a real "scientist"? (Score 2) 448

He is a science popularizer, not a scientist. He listens to the experts and echos what they say, but in a folksy way. I guess that's what a 'science guy' is. This doesn't mean he's wrong; he has a fairly good understanding of the climate issue. He is sometimes a little fuzzy on the details, though.

Comment Re:Not a look inside (Score 1) 60

So I watched that whole tedious hour. I've had enough shaky cam to last me for another decade.

Ouch. I probably should have put a warning on it. I guess I spent less than half an hour watching it. I downloaded it and used mplayer to play it. That makes skipping through it by minutes easy. That was still more than it deserved.

They didn't show one square centimeter of the second floor, where Panasonic is building their cell production line.

I said they excluded the most sensitive areas.

I was amazed that so many wanted to go to the event. Visiting the Nevada desert in July doesn't sound like fun.

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