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UUnclear Engineer replied to the thread Airplane contrails are a tricky, and surprising, contributor to global warming.Not so sure I want to click on a link that says "Radware Bot Manager Captcha"
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UUnclear Engineer replied to the thread Airplane contrails are a tricky, and surprising, contributor to global warming.The effects of contrails really don't "go away within a few hours" if you consider the heat that has been deposited on the surface and...
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UUnclear Engineer replied to the thread Airplane contrails are a tricky, and surprising, contributor to global warming.It would probably need to be liquid hydrogen for long-distance flights, and that is a problem. Remember the early Centaur explosions...
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UUnclear Engineer replied to the thread Airplane contrails are a tricky, and surprising, contributor to global warming.I am going to disagree on flying being "too convenient", considering how inconvenient it has become for me. I take a train up the U.S...
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UUnclear Engineer replied to the thread Airplane contrails are a tricky, and surprising, contributor to global warming.Thanks for that link, too. I will need to get some time to look through it. 2 things jumped out of the abstract for me: 1. "The best...
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UUnclear Engineer replied to the thread Airplane contrails are a tricky, and surprising, contributor to global warming.Thanks for the title. I searched and found the link...
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UUnclear Engineer replied to the thread Airplane contrails are a tricky, and surprising, contributor to global warming.I understand the individual effects, as already stated in my previous post. The question remains why the net effect is heating...
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UUnclear Engineer replied to the thread Are we alone? Intelligent aliens may be rare, new study suggests.The difference I see between "truth" and "belief" is based on demonstrability. Known "truth" is demonstrable in a repeatable manner...
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UUnclear Engineer replied to the thread Are we alone? Intelligent aliens may be rare, new study suggests.I do agree that "theories" are not equivalent to "truth". At most, they are just the best approximation of the "truth" that we can...
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UUnclear Engineer reacted to whoknows's post in the thread Are we alone? Intelligent aliens may be rare, new study suggests with
Like.
(For the record " https://en.wikipedia.org/wiki/Knowledge" knowledge has a broader definition.) All of this discussion justifying... -
UUnclear Engineer replied to the thread Are we alone? Intelligent aliens may be rare, new study suggests.I also wondered about Helio's choice of the word "reigns". But, whether he meant "guides" or "rules over" really doesn't matter to my...
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UUnclear Engineer replied to the thread Are we alone? Intelligent aliens may be rare, new study suggests.I would not agree that "philosophy and religion have the reigns for truth". There are too may past and current examples of both that...
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UUnclear Engineer replied to the thread Sun unleashes jaw-dropping filament eruption — but Earth dodges the blast (photo).If we had the means to accurately predict the effects of a particular solar mass ejection, then we could pre-emptively disconnect the...
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UUnclear Engineer replied to the thread Eventually, all life on Earth will be destroyed by the sun': Elon Musk explains his drive to colonize Mars.Trying today to figure out what will be feasible in hundreds of millions of years is foolish. Humans might be extinct by then for...
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UUnclear Engineer replied to the thread Yellowstone holds potentially untapped cache of 'carbon-free' helium for rockets, reactors and superconductors.Helium comes from the natural radioactive decay chain for Uranium and Thorium. The "alpha particles" released in the decays are just...
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