Science

Vatican smoke signals: The science behind the smoke

To observers of the papal conclave, one part of the process will probably stand out as the most visible and exciting. Today, all 115 cardinals will isolate themselves from the rest of the world, their only contact with the outside world being smoke signals.

What the fumes indicate is simple: black smoke means there has been no decision on a new pontiff. But if the "fumata bianca," or white smoke, flows out of the chimney, then the world knows there is a new Bishop of Rome. The color has to be just right, or millions of onlookers will be fooled.

But just how does the smoke get its color? … Read more

Elon Musk at SXSW: 'I'd like to die on Mars, just not on impact'

AUSTIN, Texas -- SpaceX and Tesla founder Elon Musk wowed a capacity SXSW crowd here today with the first public showing of a video of a rocket capable of blasting off and then returning safely and gently to the ground. And he later added he hopes to one day travel (perhaps one-way) to Mars.

The video of the company's Grasshopper rocket, filmed just about a day-and-a-half ago, demonstrates one of SpaceX's key propositions: That it can develop reusable rockets at a fraction of the cost of a traditional NASA mission, and that it can bring them back down … Read more

Rep. Eshoo on House's student app competition (podcast)

The House of Representatives on Tuesday passed a resolution to create an academic competition that would encourage students to build mobile and computer apps. The Academic Competition Resolution of 2013 is a bi-partisan effort led by Rep. Bob Goodlatte (R-Va.) and Rep. Anna Eshoo (D-Calif.), who represents much of Silicon Valley.

The competition, according to the resolution, "will evolve over time and will challenge students in specialized areas of science, technology, engineering and math (STEM) to ensure maximum participation." The resolution states: "Because of the importance of computer science it would be appropriate to initially challenge students … Read more

Cell phone germs as art: Gross or gorgeous?

It's not news that cell phones harbor bacteria, but there's a difference between knowing that about your device and seeing the germs up close in all their furry, florid glory.

Molecular biology undergraduates at the U.K.'s University of Surrey recently got a stark view of just how much bacteria crawls on their phones when instructor Simon Park had them imprint their devices onto petri dishes filled with a bacteriological growth medium and wait a few days to see what bloomed. … Read more

Russian meteorite: The conspiracy theories

A good hearty conspiracy theory can shine a sharp light on two of humanity's most enduring traits.

One, of course, is humanity's boundless imagination. The other is humanity's essential suspicion of humanity.

So while you might be deeply immersed in Bill Nye's explanation of the Russian meteorite, those with darker sensibilities have filled the Web with their fears and hauntings about the phenomenon.

There are few nations with greater awareness of dark sensibilities than Russia. The fact that there seems to be little evidence of meteorite fragments on the ground has encouraged some Russians to offer their own suspicions.… Read more

Behind the scenes with the world's largest LED art project

SAN FRANCISCO--I'm standing behind Leo Villareal, watching the well-known artist calibrate settings in the software running on his screen. Each time he moves a slider, one of the world's largest art installations -- mounted on one of the world's most-famous landmarks -- changes in an instant.

It's a gorgeous evening on the Embarcadero, San Francisco's eastern waterfront, with the San Francisco-Oakland Bay Bridge dominating the landscape in front of us, and a near-full moon doing its best to overcome the typical evening fog cover. Lights from the city, and from Oakland on the other side of the bay reflect brilliantly in the water. And with just the most subtle adjustments in his custom-designed software, Villareal makes thousands of LEDs strung out over the 1.8 mile-long western span of the bridge almost instantaneously change what they're doing, and how they're interacting with each other. … Read more

Hidden messages, old ears: iPad app tests sound phenomena

Don't believe everything you hear -- a new science app reminds iPad users that our brains like to play tricks on us.

Created by the Exploratorium museum, Sound Uncovered replicates sound phenomena experiments, using examples that test what you thought you knew -- like why we can hear our car engines -- and introduces some sounds you may have never heard before.

"It's revealing the kink in the system, how your brain works," said Jean Cheng, project director of the online engagement group for the Exploratorium. The app's creators -- a mix of scientists and … Read more

J.J. Abrams: One director to rule them all?

Since 1977, there's been "Star Trek" and there's been "Star Wars" and never the twain shall meet.

It's not that fans of one franchise couldn't be fans of the other. But for the most part, if you were involved in the production of one, you weren't involved in the other. But now, with word out of Hollywood that "Star Trek" and "Star Trek Into Darkness" director J.J. Abrams may helm the forthcoming "Star Wars Episode VII," we may have an unprecedented mixing of the … Read more

Circuit Playground plushies a perfect post-Xmas toy for hacker kids

It's a little late for Christmas presents, but if you throw a little time-machine action into the mix, this might be the perfect gift for the hacker kid in your life: Circuit Playground plushies.

The plushies are the newest product from Adafruit Industries, a leader in the open-source hardware world and the maker of a wide range of products for hackers young and old. Led by Entrepreneur magazine's entrepreneur of the year Limor Fried, Adafruit has a long history of promoting the do-it-yourself movement, and giving those who play and work in it the tools they need. … Read more

Huge mechanical snake brings Burning Man vibe to CES

LAS VEGAS--When you come to CES here, you expect to see computers and TVs galore. Mobile phones, sure. Printer and speakers? Check. But a 50-foot-long mechanical snake?

Though we're in an arid, desert-like Nevada environment (never mind all the cement and golf courses), this isn't Burning Man. But sure enough, just behind the CNET trailer here, Titanoboa is strutting its stuff. And indeed, Titanoboa is a 50-foot mechanical snake.

Created by EatArt, the Vancouver arts collective, Titanoboa seeks to invoke the promise -- or the threat -- of global climate change, and the kinds of things we might start to see happen on this wonderful planet of ours. According to the Titanoboa project page: … Read more