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Comment: Seems like legal risks would make this stupid (Score 1) 782

by dfay (#40349311) Attached to: Ask Slashdot: What's Your Take On HTTPS Snooping?

So if they are basically capable of MITM on any HTTPS connection, what if you use a secure site to do health-care related stuff (HIPAA?). What about sexual harassment reporting? Since they can see your banking password and others, what kind of liability have they exposed themselves to?

I wouldn't work at a place that did this, but then again, if I were in IT at a company like this, I wouldn't want to assume the risks of watching all secure traffic.

Power

Nanowire Forests Use Sunlight To Split Water 56

Posted by Soulskill
from the just-have-to-keep-the-nanosquirrels-away dept.
An anonymous reader sends this excerpt from IEEE Spectrum's Nanoclast blog: "One of the fundamental problems with fuel cells has been the cost of producing hydrogen. While hydrogen is, of course, the most abundant element, it attaches itself to other elements like nitrogen or fluorine, and perhaps most ubiquitously to oxygen to create the water molecule. ... Now researchers at University of California, San Diego have developed a quite different approach to mimicking photosynthesis for splitting water molecules by using a 3D branched nanowire array that looks like a forest of trees. ... The nanowire forest [uses] the process of photoelectrochemical water-splitting to produce hydrogen gas. The method used by the researchers, which was published in the journal Nanoscale (abstract), found that the forest structure of the nanowires, which has a massive amount of surface area, not only captured more light than flat planar designs, but also produced more hydrogen gas."

Comment: Which surprises you most? (Score 4, Insightful) 110

by dfay (#38500276) Attached to: GnuPG Short ID Collision Has Occurred.

Which surprises you most?

1. That GPG developers and users have ignored the well-known problem (in security circles) of the Birthday Paradox?
  - or -
2. That there are > ~45k GPG users such that this even is more likely than not to occur. ;)

Seriously though, a 1 in 65536 chance of a collision doesn't seem acceptable to me.

Comment: Surprise! Business model problems... (Score 4, Insightful) 710

by dfay (#30623068) Attached to: Thorium, the Next Nuclear Fuel?

According to this (see the section called "Fuel cycle concerns"), because there is no need to refine the Thorium fuel, which is the stage where the nuclear power companies currently make their money, they would need to change their business model to cope. We all know how much companies like to do that.

So, you combine the politicians' lack of desire to risk being associated with nuclear power, and the entrenched industry's lack of interest in the business model, and it's suddenly easy to explain.

Comment: Advantages vs. traditional rotating wing? (Score 4, Interesting) 128

by dfay (#28546671) Attached to: Flapping NAV Performs Controlled Hovering Flight

To any familiar with this company or this line of research in general:

What are the advantages of the ornithopter design over a traditional helicopter design? Why is DARPA interested?

Yes, I did read the article... and I understand what DARPA is interested in getting out of a small UAV that can hover. What I don't understand is why a normal helicopter design couldn't suit all of these needs better and cheaper.

Regardless of the answer, it's a very cool project. Obviously very worthwhile just from the point-of-view of the scientific and engineering advances.

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