EdEarl

Very small amounts of Fukushima radiation found in tuna:

Rebar or steel wier would be difficult for a printer, but concrete reinforced with fiberglass or carbon fiber would be simpler.

This sounds like a tall tale. But, if reported in Biology, it should be true.

The Fermi Paradox asks why haven't we received some signal from an exocivilization--assuming such civilizations exist because the universe is large and the chance we are alone seems remote. . If there were intelligent life on 186f and they had already contacted us, there would be no Fermi paradox. That they have not contacted us continues the Fermi Paradox. Perhaps they are not yet advanced enough, or have not been advanced for long enough for a signal from their civilization (if it exists) to reach us.

Too little is known about Kepler 186f for it to affect our chances of continued survival much at this time, but the hypothesis of this story is interesting.

If it were threatening to our society to change our ways to assure the climate does not change, there would be a real argument for doing nothing. However, changing our ways to prevent climate change will make our society and the Earth a better place, and the expense is nominal at most, and in some cases less than not changing. Of course, one must be careful not to waste time and money, because change done the wrong way can be very expensive for little effect. Today it can be less expensive to use solar and wind power than nuclear, coal, or oil. I saw that one polluted site, a super-fund cleanup waiting for funds, was used to build a solar farm to generate power, which is a winning scenario because the cleanup can be postponed indefinitely; thus, saving lots of cleanup money. Many corporations convert their buildings to use solar power, and save money in the process. Similar technology can be built into new homes without making them excessively expensive, and the cost of utilities is reduced. The Navy has learned to make jet fuel from CO2 in sea water, which is a carbon neutral process. They save money because they don't have to buy fuel and ship it to the far reaches of the globe. IDK if the process can be used to fuel automobiles and diesel trucks economically, but if it can be, the need for more oil wells and coal plants is reduced. We have finally come to a point where green technology is cost effective, why not insist on your community being greener? Do you want to have more oil spills from trains, ships, and oil platforms? Do you want more people killed mining coal? I think not. Don't fight a greener world, embrace it. It's good for you and your progeny. The faster we do it the quicker we stop abusing the environment and humanity.

I know. I'm slowly building a case. Of course, salmon and other sea food is building up radiation from the Fukushima disaster; thus, you might want to reconsider salmon. IDK how much radiation will be increased in salmon from it.

True, corn chips with picante and dark chocolate don't make a balanced diet.

They aren't very big, but will provide shelter to people who have none, for example after an Earthquake. It seems reasonable that bigger houses are possible to print, too--just change the design and printing instructions.

There are other possibilities, for example Hydrogen. Burning hydrogen makes water, which is nice, but hydrogen is not a very dense fuel; thus, pre gallon you get more distance from diesel or gasoline. On the other hand, diesel and gasoline put CO2 into the atmosphere, which is the reason for considering hydrogen as a fuel, its only byproduct is water. Biofuels, such as biodiesel, alcohol, and wood, put carbon into the atmosphere, but to grow them removes the CO2; thus, they are carbon neutral. They neither add nor remove carbon from the atmosphere for a complete grow, make use cycle. Thus far, oil is less expensive than biofuel. The navy has recently announced a process to remove CO2 from sea water and make jet fuel, which is a carbon neutral process. I don't know anything about the economics.

See also: http://www.scienceforums.net/topic/82847-processed-meat-bad-for-health/ http://www.scienceforums.net/topic/82630-nutrition-beans-reduce-cholestorol/ More evidence that a vegan/vegetarian diet is more healthful.

Jeff Hawkins describes the neocortex as organized as a Hierarchical Temporal Memory, but the entire brain is more complex. Moreover, it is a multiprocessor with about a 100G neurons and 100,000G of synapses.

When I was studying at the university, there were a couple of MD, PhD Electronic Engineers, possibly researching and engineering medical equipment, in addition to whatever classes they taught.

I don't know why they don't do geothermal in Yellowstone, but it's probably because of cost. However, the bore for geothermal power may weaken the underlying strata and promote Earthquakes and possibly an eruption. I think the amount of heat in Yellowstone is so much greater than might be tapped for power that it is an insignificant fraction, and would not drain the heat away from the underlying lava to prevent eruption. I think economics and geology do not favor a power plant in that location. Although, further investigation and development in the future might change the equation.

Sooner or later a city will be hit.

These are a partial case for being vegan.

khanacademy.org is a very good place to learn math. Its lessons begin with 1+1 and progress through calculus. There are short videos, and on-line practice. You can start with any lesson, and jump around if you wish.

3. "electrical particle process" is unclear. Can you rephrase to be more clear. 4. is true. Although, your statements could be improved with fewer words.

One of my personal attitudes about life is that things are cyclic, and I like to compare them to a pendulum that swings back and forth. None of the sciences are dieing; whatever has been learned and is captured in journals might be lost if all copies of a journal are lost, but ATM that seems unlikely as many libraries have copies of journals. To a large extent funding drives the things scientists work on, and funding agencies establish priorities about things they think are most important and less important. They fund some things and not others, and as some technology becomes well known, for example analyzing DNA, funding is changed to other projects (e.g., designing a bacteria). Valuable research can be done in every scientific discipline, in addition to all that has already been done. The disciplines that seem unimportant today may become important for reasons unknown today. Although we would like to know the future, we are poor at predicting. Inevitably, we must wait and see what happens, and the surprises make life interesting.

Will this work, or will there be health issues, such as blood cooled as it passes your wrist being more prone to clot because it is cooler.