This tinkertoy computer, on display at Boston's Museum of Science, actually plays tic-tac-toe! Retro Thing has the story: Link
This tinkertoy computer, on display at Boston's Museum of Science, actually plays tic-tac-toe! Retro Thing has the story: Link
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Magnesium (to make magnesium chloride) comes from dolomite, the principle ore of magnesium. It's chemical formula is CaMg(CO3)2. That's calcium magnesium carbonate. This is then treated with an acid solution to separate out the metals. In the process the carbonate rock releases carbon dioxide. So any carbon dioxide that could possibly be absorbed by the magnesium was already released by the production of the magnesium.
Someone also made the claim that they could use lime (calcium oxide) to absorb massive amounts of CO2 to form limestone (calcium carbonate). Then someone pointed out the obvious. To produce lime, you heat limestone.
Pudong is the perfect sci-fi city. It doesn't mean it should be replicated everywhere, but Montreal could use some of that...
In the Shanghai of last year, I'm sure the skyline is more developed then when you were there in 2004. Building is going on at an insane rate. But what really confused me is that many of the new buildings have hats or structures on the top that look like headgear. It's completely weird.