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Comment Seriously??? (Score 1) 933

Linux was never a competitor on the desktop.

It has very little to do with the quality of the software, or backwards compatibility. The problem is that Linux didn't have a big marketing machine pushing it on the desktop.

Comment OpenDNS (Score 1) 646

I've found a fairly simple solution.

I set up an extra router for the kids. This router forwards OpenDNS as the DNS server. I've setup OpenDNS to only allow the sites that I allow them to access without supervision. OpenDNS also provides reports of what sites were attempted to be resolved.

When the kids want to play an online game (or do some other activity that we believe should be supervised), they have to bring their laptops downstairs to the family room where we can watch them and connect an ethernet cable to our main router.

Comment Re:Water appearing on the surface is not the same. (Score 5, Informative) 95

At the poles it is not much of a toss. It is pretty safe to say that if there is water at the poles it is frozen and not very likely to turn liquid at any given time.

In Mars' low-pressure atmosphere, water will behave much like dry ice does on Earth - it converts straight between a solid and a gas without entering a liquid phase.

Phase Diagram of Water

Note that the air pressure averages around 600 pascals. That's below the solid-liquid-gas triple-point in the diagram. And temperatures on Mars tend to be well below the freezing point as well.

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