Going to Mars would stretch human technology and ingenuity to its outer limits, but if humanity is ever to spread across the Solar System, it’s a diabolical challenge we will need to overcome.

Today, the X PRIZE Foundation announced the official roster of 29 registered teams competing for the $30 million Google Lunar X PRIZE, an unprecedented competition to send a robot to the Moon that travels at least 500 meters and transmit video, images, and data back to the Earth. This group of teams signifies this new era of exploration’s diverse and participatory nature as it includes a huge variety of groups ranging from non-profits to university consortia to billion dollar businesses representing 17 nations on four continents. The global competition, the largest in history, was announced in September 2007, with a winner projected by 2015.

Srivastava realized that the same logic could be applied to the lottery. The apparent randomness of the scratch ticket was just a facade, a mathematical lie. And this meant that the lottery system might actually be solvable, just like those mining samples. “At the time, I had no intention of cracking the tickets,” he says. He was just curious about the algorithm that produced the numbers. Walking back from the gas station with the chips and coffee he’d bought with his winnings, he turned the problem over in his mind. By the time he reached the office, he was confident that he knew how the software might work, how it could precisely control the number of winners while still appearing random. “It wasn’t that hard,” Srivastava says. “I do the same kind of math all day long.”

There's a big difference between being self-employed and being a business owner.

Being self-employed feels like freedom until you realize that if you take time off, your business crumbles.

To be a true business owner, make sure you could leave for a year, and when you came back, your business would be doing better than when you left.

The Magic Work Cycle is a powerful productivity technique. It's very simple. Work for thirty minutes, giving all of your attention to whatever project you are working on. After thirty minutes, take a break for thirty minutes. You can do anything you want to take your mind off of your work. Then repeat again with thirty minutes of work.

And this page has a timer feature to tell you when to switch.

Pick a starting color and get complements, triads, tetrads, etc., calculated automatically.

The other stand is different. The lemonade is free, but there's a big tip jar. When you pull up, the owner of the stand beams as only a proud eleven year old girl can beam. She takes her time and reaches into a pail filled with ice and lemons. She pulls out a lemon. Slices it. Then she squeezes it with a clever little hand juicer.

The whole time that's she's squeezing, she's also talking to you, sharing her insights (and yes, her joy) about the power of lemonade to change your day. It's a beautiful day and she's in no real hurry. Lemonade doesn't hurry, she says. It gets made the right way or not at all. Then she urges you to take a bit less sugar, because it tastes better that way.

...

Finally, once she's done, you put $5 in the jar, because your free lemonade was worth at least twice that. Well, maybe the lemonade itself was worth $3, but you'd happily pay again for the transaction. It touched you. In fact, it changed you.

Pixelation is a message board about pixel art, first and foremost. Its role is to provide a setting in which people may sharpen their skills by posting work and receiving critique from others, and to offer critique when others request it.

No moment in technology history has ever been more exciting or dangerous than now. The Internet is like a new computer running a flashy, exciting demo. We have been entranced by this demo for fifteen years. But now it is time to get to work, and make the Internet do what we want it to.

-- DAVID GELERNTER is a professor of computer science at Yale and chief scientist at Mirror Worlds Technologies (New Haven). His research centers on information management, parallel programming, and artificial intelligence. The "tuple spaces" introduced in Nicholas Carriero and Gelernter's Linda system (1983) are the basis of many computer communication systems worldwide. He is the author of Mirror Worlds, and Drawing a Life: Surviving the Unabomber.

Emmy was once the world’s most advanced artificially intelligent composer, and because he’d managed to breathe a sort of life into her, he became a modern-day musical Dr. Frankenstein. She produced thousands of scores in the style of classical heavyweights, scores so impressive that classical music scholars failed to identify them as computer-created. Cope attracted praise from musicians and computer scientists, but his creation raised troubling questions: If a machine could write a Mozart sonata every bit as good as the originals, then what was so special about Mozart? And was there really any soul behind the great works, or were Beethoven and his ilk just clever mathematical manipulators of notes?