From what I understand, the benefit of autonomous truck driving is not eliminating the drivers, it's fuel economy. By having a convoy of trucks spaced optimally apart, the trailing trucks can benefit from the aerodynamic "draft" created by the first truck. Humans simply aren't capable of maintaining those gaps safely.

about this technology, and he mentioned that this process allows combustor shapes not possible through traditional manufacturing methods. This means new opportunities for jet engine performance and emissions.

This is the same technology used by SpaceX on their engines.

I nominate the Citizen Eco-drive wristwatch. It will run as long as it's exposed to light for at least a few minutes every 8.7 years!

I'm not aware of any seats on a CRS Dragon. However, I do remember an astronaut stating that a human stowaway would make it safely to earth aboard one. It certainly has some life support systems, because it carries mice to ISS.

I think since the Space Shuttle program, NASA has become much more concerned with safety. Therefore, a Dragon 1 with seats won't do. They want redundancy, specifically abort capability from the launch pad to orbit. Which is something the Space Shuttle never had. Before Challenger, it was LEO or die.

I wouldn't be surprised if NASA has a secret evacuation plan that involves using a Dragon as a lifeboat.

Although TFA does not name all of the routers affected, it does name Ubiquiti routers specifically as being an issue.

$400! In Illinois there is no charge for the test.

Not really, vehicles deteriorate and may begin to fail emissions standards. You are lucky to have a dependable vehicle that gets the same results after all these years. They are usually testing to see if your vehicle is functioning properly. In Illinois they just do an OBD scan to make sure no fault codes are present for the O2 sensor and catalytic convertor. However, even a perfectly maintained vehicle should show some deterioration in emissions performance.

I develop vehicle emissions system for a living. An O2 sensor and a catalyst will get rid of the vast majority of emissions from a spark ignited vehicle. Little or no emissions controls would mean 1970s era cars. Think carburetor and no catalytic convertor.

and everyone arrested claims inappropriate use of force. Unless someone goes case by case, these statistics mean nothing. Both sides are biased, that's why police body cameras and bystanders recording video are such hot topics lately.

No, SolarCity doesn't lease the panels back to you - they sell the power from the panels to you. And they control the rate you pay and have the ability to raise it annually (up to 2.9% per annum).

Solar city has a variety of financial plans available. I believe you are referring to the "SolarPPA" option, but leasing panels is also an option.

The number I've been hearing is $30/month/subscriber. However, it's tricky to nail that figure down, because Disney sells ESPN as a package with all of its other channels. That's the problem. Once it becomes unbundled, you find out how much it really costs.

The Germans have done similar things since 1925.

The reason why diesel engines have problems with NOx emissions is because the high temperatures and pressures in diesel fuel cause the nitrogen in the air to react with oxygen.

The high temperatures and pressures in the combustion chamber cause the nitrogen and oxygen in the air to react with each other to form NOx.

Source: I'm a diesel emissions engineer.

Thank God there's Cyanogenmod, where my N7 is a big sluggish but still perfectly functional.

You don't necessarily need Cyanogenmod, you could just roll back to the factory image for KitKat.

Yes, the controls system appears to definitely know how it wants the rocket to be oriented. It looks like it keeps overshooting it's target though. If it is PID controlled, the 'stiction' would cause the integral term to 'wind up' and overshoot once the valve becomes unstuck. This can happen every time the valve changes direction as it must come to a stop at some point to do so.

I've run into this kind of thing a few times in my career. I'm curious how they fix it. In my experience it is never an "easy fix" as Musk says. There is always some performance tradeoff.