What happens when you have 30 cents left on your MetroCard? 70 cents? When one stop can cost upwards of $2, most of these unused cards go into the trash. In New York City alone, $52 million every year in these cards are at the bottom of bins. 

A new project from a trio of New York University students called MetroChange is a concept for a charity platform that would make it simple for subway riders to donate this spare change. With a swipe at MetroChange kiosks set up in subway stations, riders could scan their card to see how much change was left. With the push of a button, they could donate the balance. 

Can't decide what I find the most impressive about Jeb Corliss's wingsuited flight: the base jumping, the choice of song, or the multiple campera angles. (Thanks to Rosanna for convincing me that a video called "Grinding the Crack," was legitimate.)

Phoenix middle school teacher John Spencer recently published a book called Pencil Me In. The book substitutes a modern-day teacher trying to use technology like computers, iPads, and cellphones for an early 1900s teacher trying to figure out how to meaningfully use pencils in a classroom. 

The hashtag #pencilchat, took off after Spencer responded to a reader: Insert "computer" or "internet" for "pencil" in Spencer's tweets—"I'm okay with letting you use pencils, but we're going to limit the sites where you can go with them," and "Jesus was a good teacher and he didn't use a pencil, so I don't have to use one, either"—and you'll get a good sense of all-too-common attitudes about technology in public education. Now, thousands of people have Tweeted challenging the technophobia in schools with witty and satiric comments. Some favorites:

"If students become so heavily dependent upon pencils, they will never learn to boil berries to create their own medium." Andy Losik