Buzz Aldrin joins the lively crew of StarTalk Live.
Astronomy, Physics, Geology, Biology, and other applications of scientific principles
Sunday, September 22, 2013
Saturday, September 7, 2013
Can Liquid Water Exist on Mars?
I wondered whether water was possible on Mars due to the atmospheric pressure differences from Earth. I wondered whether the pressure differences would cause the freezing point to shift to a lower temperature because of the lower pressure. Apparently, only the boiling point is affected by atmospheric pressure, and the low pressure on Mars causes ice to sublimate directly into a gas (because the boiling point is below the freezing point), so there is no chance of liquid water being discovered on its surface.
WATER ICE Discussion - Mars Rover Blog and Forum
Sunday, August 11, 2013
2013 Isaac Asimov Memorial Debate: The Existence of Nothing
A very nihilistic title to be sure, but the Asimov debat continues to inspire discourse years later.
Monday, August 5, 2013
Curiosity's Greatest Hits in Its One Year on Mars
"Can you believe it's been a full year since the Mars Curiosity rover made its absolutely spectacular red, dusty landing? Millions watched with bated breath the day that NASA's Mars Science Laboratory began its historical journey. It may have taken everyone's favorite interplanetary robot a little while to get up and running, but once it did, the discoveries kept on coming. Here's a look back at some the more fun, mind-blowing, and all around spectacular of Curiosity's finds in honor of its first martian anniversary."
Wednesday, July 10, 2013
It Takes More Energy to Produce and Operate a Prius than a Hummer
The Toyota Prius has become the flagship car for those in our society so environmentally conscious that they are willing to spend a premium to show the world how much they care. Unfortunately for them, their ultimate ‘green car’ is the source of some of the worst pollution in North America; it takes more combined energy per Prius to produce than a Hummer.Think in terms of EROEI (energy returned on energy invested)
However, if that was the only issue with the Prius, I wouldn’t be writing this article. It gets much worse. Building a Toyota Prius causes more environmental damage than a Hummer that is on the road for three times longer than a Prius. As already noted, the Prius is partly driven by a battery which contains nickel. The nickel is mined and smelted at a plant in Sudbury, Ontario. This plant has caused so much environmental damage to the surrounding environment that NASA has used the ‘dead zone’ around the plant to test moon rovers. The area around the plant is devoid of any life for miles.Ignoring the actual environmental costs to promote perceived gains is hardly green.
All of this would be bad enough in and of itself; however, the journey to make a hybrid doesn’t end there. The nickel produced by this disastrous plant is shipped via massive container ship to the largest nickel refinery in Europe. From there, the nickel hops over to China to produce ‘nickel foam.’ From there, it goes to Japan. Finally, the completed batteries are shipped to the United States, finalizing the around-the-world trip required to produce a single Prius battery. Are these not sounding less and less like environmentally sound cars and more like a farce?A cost savings turns into another energy loss.
When you pool together all the combined energy it takes to drive and build a Toyota Prius, the flagship car of energy fanatics, it takes almost 50 percent more energy than a Hummer — the Prius’s arch nemesis. Through a study by CNW Marketing called “Dust to Dust,” the total combined energy is taken from all the electrical, fuel, transportation, materials (metal, plastic, etc) and hundreds of other factors over the expected lifetime of a vehicle. The Prius costs an average of $3.25 per mile driven over a lifetime of 100,000 miles — the expected lifespan of the Hybrid.
The Hummer, on the other hand, costs a more fiscal $1.95 per mile to put on the road over an expected lifetime of 300,000 miles. That means the Hummer will last three times longer than a Prius and use less combined energy doing it.That means that today's Prius will likely never be more green than today's Hummer.
So, if you are really an environmentalist — ditch the Prius. Instead, buy one of the most economical cars available — a Toyota Scion xB. The Scion only costs a paltry $0.48 per mile to put on the road. If you are still obsessed over gas mileage - buy a Chevy Aveo and fix that lead foot....or spend less than half of the cost of the Chevy or Scion and get a standard motorbike that gets 60-70mpg and has a fraction of the carbon and physical footprint of economy cars.
One last fun fact for you: it takes five years to offset the premium price of a Prius. Meaning, you have to wait 60 months to save any money over a non-hybrid car because of lower gas expenses.
Full article: Prius outdoes Hummer in Hummer damage
Don't forget; the net result of more fuel-efficient cars is higher overall consumption rates and more vehicles on the road due to lower operating costs. Hello unintended consequences.
Sunday, June 30, 2013
Oregon passes unconstitutional bill that infringes natural right of parents to opt out of vaccination ‘requirements’
A new Oregon law would make it more difficult for parents to refuse vaccinations for their children, beyond the unconstitutionality of such a law. It really comes off as state propaganda, since the CDC (the drug industry's government mouthpiece) provides the "educational" material as part of a reeducation effort for those with a critical mind who choose to opt out.
Solar Held back by Government Policy
As is typical, progress is held back by government intervention and bad public policy. A more effective path would be to simply circumvent the bureaucracy and allow the market to work.
Solar PV permitting processes tend to be rather laborious and slow-moving — especially in the US — so any improvements to and streamlining of such processes by local governments is to be highly commended. The bureaucracy associated with such permitting processes is thought to be one of the primary obstacles to higher rates of household solar PV adoption in the US.
Or we could keep letting the state make life worse.
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