Skin Scan is a new iOS app that is designed with a single purpose in mind – keeping track of the size and shape of your moles. Just snap a picture, load it into the app and it will be analysed. Keep uploading more pictures of the same mole over time and it will track the changes in size and shape to help you understand if there’s anything to be worried about.

Michael Galpert rolls over in bed in his New York apartment, the alarm clock still chiming. The 28-year-old internet entrepreneur slips off the headband that’s been recording his brainwaves all night and studies the bar graph of his deep sleep, light sleep and REM. He strides to the bathroom and steps on his digital scale, the one that shoots his weight and body mass to an online data file. Before he eats his scrambled egg whites with spinach, he takes a picture of his plate with his mobile phone, which then logs the calories. He sets his mileage tracker before he hops on his bike and rides to the office, where a different set of data spreadsheets awaits.

“Running a start-up, I’m always looking at numbers, always tracking how business is going,” he says. Page views, clicks and downloads, he tallies it all. “That’s under-the-hood information that you can only garner from analysing different data points. So I started doing that with myself.”

This stuff fires me up. Combined with cooking, cooking equipment, cleaning things up, buying furniture, reading, writing, etc.–it’s all about engineering the life you want.

Highly enthused I am.

Yep.

In other words, Thomson and Andrews imagined depression as a way of forcing the mind to focus on its problems. Although rumination feels terrible, it might make it easier for us to pay continuous attention to our dilemmas. According to Andrews and Thomson, the mood disorder is part of a “coordinated system” that exists “for the specific purpose of effectively analyzing the complex life problem that triggered the depression.” If depression didn’t exist — if we didn’t react to stress and trauma with endless ruminations — then we would be less likely to solve our predicaments.

Wouldn’t surprise me.

Smokers in New York City looking to light up in most public places will not be able to without paying a price after an outdoor citywide smoking ban takes effect Monday.

The law, which Mayor Michael Bloomberg signed in February after it was passed by the New York City Council, will make smoking illegal in New York City’s 1,700 parks and on the city’s 14 miles of public beaches. Smoking will also be prohibited in pedestrian plazas like Times Square.

I really wish this were in place in San Francisco and…well, pretty much everywhere.

Not every sleeper is the same, of course: Dinges has found that some people who need eight hours will immediately feel the wallop of one four-hour night, while other eight-hour sleepers can handle several four-hour nights before their performance deteriorates. (But deteriorate it will.) There is a small portion of the population — he estimates it at around 5 percent or even less — who, for what researchers think may be genetic reasons, can maintain their performance with five or fewer hours of sleep. (There is also a small percentage who require 9 or 10 hours.)

Still, while it’s tempting to believe we can train ourselves to be among the five-hour group — we can’t, Dinges says — or that we are naturally those five-hour sleepers, consider a key finding from Van Dongen and Dinges’s study: after just a few days, the four- and six-hour group reported that, yes, they were slightly sleepy. But they insisted they had adjusted to their new state. Even 14 days into the study, they said sleepiness was not affecting them. In fact, their performance had tanked. In other words, the sleep-deprived among us are lousy judges of our own sleep needs. We are not nearly as sharp as we think we are.