If you’ve ever carried a tub of Ping-Pong balls near some sort of slope or ledge, then you’ve felt it: an overwhelming urge to dump the balls out and watch how they bounce.

Well, HubSpot decided to give in to that urge, and in a spectacular manner. Fresh off its first-quarter earnings call yesterday — in which the company reported revenue of $38.2 million, a 58 percent uptick from last year — HubSpot dumped 15,000 Ping-Pong balls off of a fourth-floor balcony in its building to celebrate its 15,000th customer.

Poor, poor custodians.More →

Hiawatha Bray

New England Patriots locker-room employees Jim McNally and John Jastrzemski engaged in a series of sometimes vulgar, always entertaining series of text messages that, according to the National Football League, implicated star quarterback Tom Brady in the teams efforts to use underinflated footballs in the AFC championship game against the Baltimore Ravens.More →

Tian Deng and Qi Su, co-founders of Cambridge-based Modelo, which makes it simple to share and comment on digital 3D models.

As a staffer at architecture studios, Qi Su observed one thing: everyone looking at a digital 3-D model of a project had comments about what should be changed and improved. “A lot of the back-and-forth is done with e-mails and screen captures of the model,” he says. “Architects would print out images and comment and send them back to the person who made the model — which was me.”

His Cambridge startup, Modelo, seeks to pull that process of comments and suggestions into the digital realm. “We’re about letting people make social comments on 3-D models in real-time,” Su says.More →

Jana

Luca Mars did the math. Three years ago, the 19-year-old accounting student, who lives in the small Brazilian city of Várzea Alegre, 2,200 miles northeast of Rio, took a look at his mobile phone bill and knew that he couldn’t cover the cost of the data plan. Mars works as an administrative assistant at a primary school, and says his phone bill typically ate up 10 to 15 percent of his paycheck.More →

The heart attack started abruptly, a quiver in the left ventricle that starved a section of muscle of vital oxygen. Paralyzed and damaged tissue threw off the heart’s natural pumping rhythm and stretched the valves and cords that keep blood flowing through its chambers. The organ sprang a leak.

The fix was simple: a ring-shaped band that was clipped into an opening between the chambers, with a small hook supporting the stretched cords, helping the mechanism along and reversing the damage that the attack had caused.

The virtual patient, a 39-year-old male, lived. Both he and this heart attack were a simulation, visualized in exacting detail by a team of researchers at Waltham-based Dassault Systèmes who are trying to recreate a biologically accurate model of the heart. Their goal is to enable surgeons and device makers to take a virtual tour through the human body as they experiment and design fixes for it.More →

Hiawatha Bray

An elderly friend with health problems gave me a scare recently when I phoned her and learned her number was out of service. Had she moved, or was it something much worse? Actually, she was feeling better than ever, now that those infuriating sales calls had finally stopped. Out of sheer frustration, my friend had gotten a new phone number.More →