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Comment Re:Cool thing is... (Score 1) 107

I think his taste isn't affected much. The electro shocks are inadequate signal for the taste buds, which are chemoreceptors. The cells reacting to the shocks may be mechanoreceptors, like the cells responsible for the sense of touch in skin. The shocks are inadequate signals for them as well, but still closer. The brain just started to "see" meaningful information in those shocks. It's similar to the guy (link lost, lazy to google) who made himself a kind of belt with vibrating motors around it coupled to a compass. The motor oriented north vibrated, giving the man a new, previously unknown "sense of north".
NASA

Submission + - Dying Man Shares Unseen Challenger Video (nycaviation.com) 1

longacre writes: An amateur video of the 1986 Space Shuttle Challenger explosion has been made public for the first time. The Florida man who filmed it from his front yard on his new Betamax camcorder turned the tape over to an educational organization a week before he died this past December. The Space Exploration Archive has since published the video into the public domain in time for the 24th anniversary of the catastrophe. Despite being shot from about 70 miles from Cape Canaveral, the shuttle and the explosion can be seen quite clearly. It is unclear why he never shared the footage with NASA or the media. NASA officials say they were not aware of the video, but are interested in examining it now that it has been made available.

Comment Re:I am scared. I am intrigued. (Score 1) 820

What is this "real meat" everybody keeps talking about? Is it the product we buy in supermarkets, the lumps of chicken that grew in 4 weeks stuffed with growth hormones and antibiotics? The only difference between this lab grown meat and the stuff we eat today is that the new product has no head. An improvement, if you ask me.
NASA

Submission + - Success in 'space elevator' competition (denverpost.com)

reifman writes: LaserMotive's robot powered by a ground-based laser beam climbed a long cable dangling from a helicopter on Wednesday to qualify for prize money in a $2 million competition to test the potential reality of the science fiction concept of space elevators. Earlier out on the lakebed, team member Nick Burrows had pointed out how it grips the cable with modified skateboard wheels and the laser is aimed with an X Box game controller.

Comment Re:Put the damn thing in neutral! (Score 1) 1146

I actually had thought that breaking in a regular car would disengage the engine... until I tried it.

Not a good idea. Disengaging the engine means lower control over the car, as the engine in lower gear actually helps you with braking. The injection system cuts the fuel flow, the engine is decompressing warm air, which slows the car down. Very convenient when going downhill. With the engine disengaged, the only thing that's slowing the car down are the brakes. Leaving the gear in saves fuel, brakes and the engine health as well. Additionally, in critical situations you can hit the gas pedal and accelerate immediately.

Medicine

Submission + - How Terahertz Waves Tear Apart DNA (technologyreview.com)

KentuckyFC writes: Great things are expected of terahertz waves, the radiation that fills the slot in the electromagnetic spectrum between microwaves and the infrared. Terahertz waves pass through non-conducting materials such as clothes , paper, wood and brick and so cameras sensitive to them can peer inside envelopes, into living rooms and "frisk" people at distance. That's not to mention the great potential they have in medical imaging. Because terahertz photons are not energetic enough to break chemical bonds or ionise electrons, it's easy to dismiss fears over their health effects. And yet the evidence is mixed: some studies have reported significant genetic damage while others, although similar, have reported none. Now a team led by Los Alamos National Labs thinks it knows why. They say that although the forces that terahertz waves exert on double-stranded DNA are tiny, in certain circumstances resonant effects can unzip the DNA strands, tearing them apart. This creates bubbles in the strands that can significantly interfere with processes such as gene expression and DNA replication. With terahertz scanners already appearing in airports and hospitals, the question that now urgently needs answering is what level of exposure is safe.

Comment Re:On grey goo (Score 1) 119

The use of things like rotating bearings and electric current (for transmission of energy) might enable a self replicating machine to operate much more efficiently than life.

I'm not so sure about this. Bacteria use something like a rotating bearing for anchoring the flagellum to the cell membrane. For some reason, this evolutionary feature is absent from eukaryotic organisms (their flagella are undulating, not rotating structures). Maybe they are not so much more effective.

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