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Comment Re:This is what they mean by "point of no return" (Score 1, Interesting) 273

Methane is big. A huge greenhouse gas. It knocks the socks of carbon in all ways except that there's not that much of it(yet). It also doesn't "clean up" nearly as nicely after a couple of centuries of forest expansion/ocean calcification.

Actually, I believe the the lifetime of methane in the atmosphere is a lot less than that of CO2. So, although it's a more "potent" greenhouse gas, the long term effects of CO2 are worse because of CO2's longer lifetime.
See e.g. this article on the effects of methane compared to CO2.
http://www.realclimate.org/ind...
When methane is released chronically, over decades, the concentration in the atmosphere will rise to a new equilibrium value. It won’t keep rising indefinitely, like CO2 would, because methane degrades while CO2 essentially just accumulates. Methane degrades into CO2, in fact...

Comment wifi calling? (Score 1) 127

Did the study include the effects of calling over wifi?
I have t-mobile and connect to wifi networks at home and work for my phone connection and my charge lasts a lot longer than
when I'm away from wifi networks I can use.

As far as I know, I think t-mobile is the only carrier to implement calling over wifi.

(What, RTFA and check if that's mentioned? Of course not...)

Comment Re:I must be the outlier (Score 1) 234

I cancelled comcast basic cable service over the phone last week. I didn't get much pressure to continue with them, just a brief question or two.
I just received a UPS box and label to return my equipment. (I had just received unrequested equipment because even basic
cable is now going to be encrypted in my area.)
So, so far so good.

But, the second person I talked with on the phone who was handling the equipment return (at a contractor
company, not comcast itself) thinks I also have a modem. But I don't as I cancelled internet service
with comcast many years ago. I'm hoping that's not going to be a problem...

Comment Re:mbs/Mbs (Score 1) 208

To be fair you're not very scientific about the whole thing. You are whing about a convention (and i do share your analattitude towards m/M conventin), but mili-bits doesn't make any sense. a bit is a 0-1 atomic unit. Atomic as is cannot but cut into smaller pieces. So mili-bit doesn't make sense.

But as a rate millibits per second could make sense. One mb per second would be equivalent to transmitting one bit every one thousand seconds.

Comment Lives saved? (Score 1) 454

There are certainly deaths/years of life lost caused by excessive drinking.
But on the other hand, there are health benefits of moderate drinking.

There's some presentation of health benefits/problems on the Mayo Clinic web site:
http://www.mayoclinic.org/heal...

So, one question would be: how may years of life for the entire population are lost from excessive drinking, how many years
of life for the entire population are gained from moderate drinking? And how can moderate drinking be encouraged while
decreasing excessive drinking?
In general terms it appears that Russian men are very adversely affected by drinking (life expectancy ~64), and French women's long
life expectancies (~85) are helped by their moderate drinking.
But culture in general can be very hard to change!

Comment Re:Progenitors? (Score 1) 686

The problem with Drake's equation isn't the uncertainty - that's part of the assumption behind the equation. It's that it doesn't properly account for space & time. Let's say that the highest number is correct and that there are 100 million civilizations

In 4.6 billion year history of our solar system intelligent life has had the possibility of traveling to another star for 1.08695652e-8 of that time (that we know of anyway) - that means that of the 100 million civilizations less than 132 might exist at the same time and if distributed evenly would be 1 per 7.1969697e+15km of space. Meaning that our nearest neighbour might be 760 light years away. That means that if they just started transmitting at the same time we did, we won't pick them up for another 710 years. If they started 100,000,000 years ago those signals have long since passed us by and we likely don't have the science to pick up the more advanced signals that might be passing us by right now.

Well, I do think the Drake equation does incorporate time correctly. It includes star formation rates (rather than numbers) and the lifetimes
of civilizations.
However, the Fermi paradox isn't really a paradox if you only think about sending signals, for the reasons you discuss.
As discussed in the wikipedia article (for example) it's based on the idea of colonizing, or visiting all of, the Galaxy.
A number of people expect such "colonization" to occur by mainly self-replicating autonomous spacecraft.

http://en.wikipedia.org/wiki/F...

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