[TheDom]

My knee itches, what should I do?

[k-krack]

Probably just end it right now.. knee itches never go away. Ever.

[TheDom]

Good idea.

What is a good way to end it?

[k-krack]

Hmmm. My personal favourite is to go out in a giant act of crazyness.
IDEA: Rob a bank, take a couople hostages, wait five months, and then rob another bank, with the hostages and let the police come and get you. That way you still have the opportunity to get into heaven, cuz you never killed yrself.

[TheDom]

How about I just challenge Ken Jennings to a game of Trivial Pursuit?

[k-krack]

That would be much too painful. I don't recommend it.

[Hip Priest]

Intersting article from New Scientist, today:

The first known organisms that live totally independently of the sun have been discovered deep in a South African gold mine.

The bacteria exist without the option of photosynthesis by using radioactive uranium to convert water molecules to useable energy. Similar life forms may exist on other planets, experts speculate.

The bacteria live in ancient water trapped in a crack in basalt rock, 3 to 4 kilometres down. Scientists from Princeton University in New Jersey, US, and colleagues analysed water from the fissure after it was penetrated by a narrow exploratory shaft in the Mponeng gold mine near Johannesburg, South Africa. The shaft was then closed.

There were many species of bacteria present, but RNA sequencing showed most were a previously-unknown type of bacteria dubbed Desulfotomaculum.

“Similar microbes have been detected in many subsurface environments,” study leader Li-Hung Lin, now at National Taiwan University, told New Scientist. “What is unique in our study is that this microbial community doesn’t depend on photosynthetic products.”

Alternative power

All living things require a source of energy – which is directly or indirectly from the Sun. Green plants use the Sun’s energy, in a process called photosynthesis, to make energy-rich chemical bonds, for example, between the carbon and hydrogen atoms in sugar molecules. Some of the energy stored in these bonds is then released when a living organism replaces the hydrogen with oxygen, giving off CO2.

Without the solar energy that plants harness to make those hydrogen-carbon bonds, none of this is possible. But the Mponeng bacteria have another source of energy.

“Sulphate and hydrogen gas are generated from geological processes. Microbes use these nutrients to live,” explains Lin.

Energy of radiation

Uranium and other radioactive elements in the rock emit radiation that shatters water molecules, producing high-energy hydrogen gas that is able to cleave chemical bonds.

The bacteria exploit this hydrogen gas to turn sulphate (SO4) molecules from the rock into hydrogen sulphide (HS). It is the energy-trapping equivalent of photosynthesis. The energy of radiation, which makes hydrogen gas energetic enough to form these bonds, replaces the energy of the Sun.

The team examined the sulphur atoms in the hydrogen sulphide they found. The ratio of isotopes – different chemical forms of the same element – proved the sulphide was produced by living organisms, in a similar way that carbon dating can be used to show whether carbon compounds have been produced by living or non-living processes.

Dying or flourishing

Other sulphate-eating bacteria have been found in ocean sediments, volcanoes and oil deposits. But all have either received some chemicals produced by photosynthesis, or it has not been clear whether they were trapped and dying, or flourishing.

A study of the inert gases in the sample, such as xenon, show that the Mponeng water has been isolated from the surface for 20 million years, says Lin. This shows that the bacteria must live totally “independent from surface photosynthesis”.

It is not known how widespread these communities are on Earth, he says. But the discovery of a stable, light-independent life form raises hopes of finding similar creatures on other planets.

Research team-member Lisa Pratt at Indiana University at Bloomington, US, also heads a team funded by NASA to design probes to look for just such life under the permafrost of Mars.

Journal reference: Science (vol 314 p 479)

[schizophrenicroom]

that's exciting. i can't imagine being a living.. thing living down there.

[Hip Priest]

Whenever we find something like that, it always makes me wonder if us being there, even if we're very careful, is going to introduce new bacteria or organisms that modify or damage the whole little ecosystem.

[k-krack]

Wow! Nifty!

[k-krack]

Originally Posted by Hip Priest

Whenever we find something like that, it always makes me wonder if us being there, even if we're very careful, is going to introduce new bacteria or organisms that fy or damage the whole little ecosystem.

True... I never really thought about it like that.. I always thought about just how we would end up fucking it up.

[Hip Priest]

'fy' has been edited to 'modify'.

[k-krack]

hahaha, sorry to catch you at a bad moment there, then. Would you like me to edit it? Or keep how it was. I'm willing to do either, it's 100% ok by me.

[whorefrost]

how civil

[schizophrenicroom]

priest- that's what i always think. like when we discovered those tiny little lifeforms in the very bottom of the ocean. i mean, they were just fine living there. we don't really need them to survive, so just let them go..

[k-krack]

whore- Yeh, we're a nice crowd in the Sonic Youth thread! We have a smile for everyone!

[schizophrenicroom]

and we only bite when we feel the need to.

[finding nobody]

Yo. My internet is shut off. Im at school
My internet done got shut off

[schizophrenicroom]

that sucks, joel

[Hip Priest]

Suckety sucks, that does.

Hello everyone. I've had a splendid day; how about you?