Sean Captain

Although high-def camcorders shoot incredible detail, they are a far cry from Hollywood gear. But the Red Scarlet, due out later this year, will capture five-megapixel video frames, picking up more than twice the detail of high-def camcorders and rivaling the eight-megapixel flicks that A-list directors are starting to shoot.

Battle of the Video Boxes: We put the leading set-top video boxes to the test (L to R: Apple TV, Vudu, and Netflix's Roku) vs. Blu-ray. Who emerges victorious?  Apple/Vudu/Roku

We live in interesting TV times. DVD players are as common as toasters. Basic Blu-ray players offer high-def flicks at prices we can (almost) afford. And now, if you can’t bother to go to the store or wait for a disc to arrive, you finally have some enticing download options.

The biggest news, of course, is the recent arrival of Roku's streaming Netflix Player, which is finally giving the company a service to match its name. The Netflix Player joins two other on-demand boxes: Vudu, which premiered last September, and Apple TV, which got upgraded to a movie-playing box in February. So, what’s the best way to go?

Its hard enough getting digital TV from an antenna in your house. Forget about in a car. But Samsung and LG aim to change that. In a scary reminiscence of Blu-ray vs. HD DVD, the two companies had been developing similar but incompatible standards (called AVS-B and MPH) for digital TV that can be delivered on the road.

The small airplane is too dirty for an environmentally threatened world. Thats not the view from eco-activists, but from some of the leading lights in general aviation—the category encompassing small planes such as Cessnas flown by citizen pilots. At some point, some environmental group is going to figure out that small aircraft fly leaded fuel, said Mark Moore, NASAs personal air vehicle program manager, to a meeting of engineers, aviation advocates and a billionaire corporate titan with his own private jet. Their goal, however, is not to bury private aviation, but to remake it as the greenest form of personal transit.

Soon youll be able to ditch your game pad and Wiimote. A new camera system for computers and consoles will track your movements in three dimensions—essentially turning your body into the game controller. For example, play Rock Band by waving your hands at imaginary drums, or dodge punches in a fighting game.

Silicon Valley is mostly a world of practical technology—applying principles from pure science to create handy gadgets. But today, Hewlett Packard announced a new electrical component born of theoretical physics. The device, a nanoscale component called a "memristor," requires no power to retain data, which it can store more densely than a hard drive and access about as fast as a computers RAM memory—potentially allowing it to replace both components in the future.

If technology were a religion, the Xerox Palo Alto Research Center would be one of the holiest shrines on any pilgrimage. So much of our modern computer world was invented at this freewheeling innovation lab (and largely given away). Prefer your mouse and point-and-click graphical interface to a UNIX-style command line? Thanks PARC. Think laser prints look better than dot-matrix scrawl? Thanks again.

Some say the glory days have passed. PARC today is a more-focused operation that has to turn quick profits (no more open funding from its owner Xerox). But its still a well-staffed corporate research lab in an era with ever-fewer of those creatures. On Monday, its staff opened the doors to the press to show off the latest gizmos.

Hmmm...What's this? Looks like a Web-based remote control for your TV. We happened upon this randomly today, and it raises lots of interesting questions. The URL sonyathome.com brings up a Web page that sure looks like it belongs to Pioneer Electronics -- what with the big "Pioneer" badge in the corner and an email function that sends a message from "elite@pioneer.com" ("Elite" is Pioneer's premium brand of A/V gear).

Is Pioneer developing software for Sony? Is Pioneer merging with Sony? Seems unlikely, since Pioneer just formally announced a joint venture to get plasma panels from Panasonic, and already have a deal to get LCDs from Sharp. But then again, Sony also gets LCDs from Sharp. Hmmm.

Digital SLRs shoot as fast as machine guns, but all those pictures are useless if they come out blurry. Autofocus often fails in low light and with quick-moving subjects such as athletes or toddlers. We pitted two cameras that promise faster, more accurate autofocus technologies against both each other and top competitors from Canon.

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OK, they are not the most objective source, but graphics processor manufacturer nVidia does make a pretty convincing argument for spending more money on a computers graphics card and less on the main processor—in certain conditions.

"Be there and be square." Thats the apt motto of Nerd Nite—a monthly barroom science and history lecture series in New York City and Boston. PopSci grabbed a beer for last weeks gathering at Angels and Kingsin New Yorks East Village to learn about dinosaurs, the history of drunkenness in Gotham and more.

For all of todays in-car entertainment options, live, local digital TV still isnt one of them. Even at home, digital television signals can break up if you wiggle the antenna, and you cant get a picture at all in a moving vehicle. But soon, you may see flawless video even if your set is barreling down the road at more than 100 mph.

There is no single measure of autofocus ability, so we did two main tests to judge the cameras chops. The first was to see how well each camera performed in difficult situations: low light and subjects with very little detail. In the second, we picked subjects that are easy to get in focus and simply measured how fast each camera could do it.

This was our setup:

Lenses

Remember Surface, the magic coffee table and massively multi-touch screen that we awarded a Best of Whats New award in December? Well it looks like its finally set to debut, as a shopping kiosk debuting at six AT&T cellular phone stores on April 17.