Link to Original Source
So I'm looking at the lithium price and I see that for $64M I can make a plant/mine which will give me $8M/year profit, and ROI of 12.5%. This looks pretty good. Then I consider than some bright spark might come up with an aluminium based battery technology which would make lithium ion batteries obsolete and could be in production 4 years from now. If this were to happen, in four years I've made back just $32M and now have a worthless mine. Therefore I decide not to invest in lithium production until I can get ROI of 20% because of the risk.
It seems to me that lithium is bound to be either overproduced (if new technology comes along) or underproduced (if new technology does not, but investors are wary of building facilities for fear it might.)
He quickly became very unpopular with settlers due to trying to be fair to the Maori. In one notable occasion some colonists invaded Maori land in an attempt to seize it and got massacred. (They were a poorly armed militia and on the other side was Te Rauparaha, who was so scary that to this day his haka is used by the All Blacks to intimidate their opposition.) After an investigation, Fitzroy sided with the Maori.
It's a radio transmitter in a can. It would take an even larger departure from known physics to make it go boom. We have a good deal of experience with radio transmitters in space.
OK, I will try to restate in my baby talk since I don't remember this correctly.
Given that you are accelerating, the appearance to you is that you are doing so linearly, and time dilation is happening to you. It could appear to you that you reach your destination in a very short time, much shorter than light would allow. To the outside observer, however, time passes at a different rate and you never achieve light speed.
I am having an equally hard time thinking of how Earth is more habitable than Mars while atomic bombs are going off or impactors are impacting. If you wait a while, sure it's more habitable than Mars. But for that moment, no.
To an outside observer. I don't think it's the same in the inertial frame.
Before we call this real, we need to put one on some object in orbit, leave it in continuous operation, and use it to raise the orbit by a measurable amount large enough that there would not be argument regarding where it came from. The Space Station would be just fine. It has power for experiments that is probably sufficient and it has a continuing problem of needing to raise its orbit.
And believe me, if this raises the orbit of the Space Station they aren't going to want to disconnect it after the experiment. We spend a tremendous amount of money to get additional Delta-V to that thing, and it comes down if we don't.
Brian Webb isn't listing this on his Vandenberg AFB Launch Schedule yet. I think he's going to wait until someone official tells him a date.
With some optimism that might only be thousands of years rather than hundreds of Millions.
But it's only necessary for Earth to be uninhabitable for a short time to end the Human race. And that can happen due to man or nature, today. If people aren't somewhere else during that process, that's the end.
If climate change is catastrophically serious, we need to reduce the CO2 in the atmosphere and immediately switch from coal to nuclear
Even if we did that, it would still take several decades for it to have an impact. And we won't do that. If climate change is catastrophically serious, then geo-engineering would be the only effective solution. On the plus side, it is only 1/1000th as expensive as CO2-emission elimination.