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Old 12-02-2010, 02:50 PM   #91
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That's it.

NASA - NASA-Funded Research Discovers Life Built With Toxic Chemical

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Researchers conducting tests in the harsh environment of Mono Lake in California have discovered the first known microorganism on Earth able to thrive and reproduce using the toxic chemical arsenic. The microorganism substitutes arsenic for phosphorus in its cell components.

"We know that some microbes can breathe arsenic, but what we've found is a microbe doing something new -- building parts of itself out of arsenic," said Felisa Wolfe-Simon, a NASA Astrobiology Research Fellow in residence at the U.S. Geological Survey in Menlo Park, Calif., and the research team's lead scientist. "If something here on Earth can do something so unexpected, what else can life do that we haven't seen yet?"
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Old 12-04-2010, 12:01 PM   #92
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Simple and cool:

YouTube - Bubble Bottle Cap
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Old 12-17-2010, 10:48 AM   #93
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Navy Working on New Super Rail Gun

YouTube - Electromagnetic Railgun world record setting event
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Old 12-17-2010, 11:18 AM   #94
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This thread is great.
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Originally Posted by UberBeaver View Post
Us = Doomed.

Not too far off we'll have robots building robots.

However, I wouldn't mind having one of those.
If you don't want to be replaced by a robot, then don't act like a robot !
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Old 12-18-2010, 11:08 PM   #95
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The title may be a bit misleading. This is just electrolysis.
YouTube - Science experiment:Homemade hydrogen fuel

We tried it once back in school. Used a 12V power source and also kept container covered for about 15 minutes. And with an elaborate mechanism to drop a piece of burning paper into it, we achieved a pretty decent explosion.
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Old 12-19-2010, 09:32 AM   #96
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The title may be a bit misleading. This is just electrolysis.
YouTube - Science experiment:Homemade hydrogen fuel

We tried it once back in school. Used a 12V power source and also kept container covered for about 15 minutes. And with an elaborate mechanism to drop a piece of burning paper into it, we achieved a pretty decent explosion.
My brother and I used to do that growing up. Lots of fun. Amazingly, neither of us ever got hurt.

I found a toy rocket kit that uses electrolyzed water (obviously hydrogen) as its fuel. I should dig that out and try it.
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Old 12-19-2010, 10:03 AM   #97
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^ Yeah, great fun. The hardest part was to learn the art of taking out those pencil leads. coz here we use pens right from kindergarten.

My cousin had one of those toy rockets. But it was not that simple. It required citric acid crystals for the hydrogen generator to work and the electronics in the ignition system were pretty complex.
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Old 12-19-2010, 10:11 AM   #98
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^ Yeah, great fun. The hardest part was to learn the art of taking out those pencil leads. coz here we use pens right from kindergarten.
I think it's funny that my mom never questioned how many big, 12V lantern batteries we went through. If we could have gotten a car battery we would have, but then we'd have been exposed.
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Old 12-19-2010, 11:06 AM   #99
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Hydrogen and stupidity don't mix too well.
YouTube - Marks HHO Rocket VERY LOUD BANG!! very funny
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Old 12-21-2010, 11:27 AM   #100
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Now this is how shit is made.
YouTube - Sugar and concentrated sulfuric acid

C12H22O11 + H2SO4 → 12 C + 11 H2O + a mixture water and acid
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Old 01-12-2011, 02:25 PM   #101
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tell me this doesnt bring a tear to your eye

YouTube - NASA - The Frontier Is Everywhere
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Old 01-25-2011, 06:28 PM   #102
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This one isn't a 'video,' rather a collection of live streaming webcams from various wildlife parks in South Africa. The site itself is puzzlingly bereft of info on who's behind it so far as I can tell, but from Googling around, I gather it started out as a privately funded initiative aimed at deterring rhino poachers, and has since evolved into something more than that. As with most things like this, the chances you'll see much at any given time are low, but by checking back regularly, our kids for example have seen lion(esse)s, zebras, wildebeest, and warthogs visiting the waterholes.


Africam
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Old 01-29-2011, 01:53 PM   #103
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a little twist on the previous space camera videos we've seen

YouTube - Project Space Planes - Launch!
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Old 02-11-2011, 01:56 AM   #104
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YouTube - The Sagan Series (Pt 2) - Life Looks for Life
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Old 02-19-2011, 08:57 AM   #105
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This is a bit "out there" at times but thoroughly compelling nonetheless.

Space Weather – implications for Planet Earth and Humankind
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