Leaving his ambulance idling outside, yellow lights flashing, Denver paramedic Austin Coleman strides into a 7-Eleven just south of University Hospital and heads straight for the beverage cooler.

He jerks open a door, reaches in and hauls out his favorite pick-me-up - a 16-ounce can of the energy drink Rockstar, which he typically buys at the beginning of every 10-hour work shift.

"It makes me awake," the 30-year-old rescue worker says of the concoction, one of dozens of caffeine-laced brands now bellying up to a bar once occupied solely by Red Bull.

"I've tried them all, and they work, that's for sure," Coleman says. "This one has more than the regular size, and I like the sugar-free kind."

Like its competitors, Rockstar promises a metabolic jump-start. As the legend on the side of the can puts it, "Rockstar is scientifically formulated to provide an incredible energy boost for those who lead active and exhausting lifestyles - from athletes to rock stars."

But it's an open question whether this or any other "high-performance" beverage actually conveys much more benefit than, say, a cup of coffee and a banana or peanut-butter sandwich.

Yole Sailing in Martinique - The Most Popular Race in the World

Which race organisers have not dreamed of creating an event where the total population watches from every hill, building, and beach the progress of their race? This is something that the "Société des Yoles Rondes de la Martinique" has achieved, in uniting a first-class sporting event with the participation of an entire population. Felix Mérine, Marc Largier, Joseph Mas, and Georges-Henri Lagier, the top four helmsmen, have a near-rockstar status that, in many ways, the top America’s Cup helmsmen have not achieved. Since 1985 the Yole Rond Society has created a sailing event that has taken a status difficult to imagine if not seen. The event is at the heart of the Martinique Society.

The 2006 Tour, hosted by the town Le Robert, encompassed races to Trinité, St.

Euphoria Engine enlisted by Rockstar

Who needs Unreal Engine 3? Well, everyone apart from Rockstar it seems, with the publisher announcing today that it has signed a new agreement to use NaturalMotion's Euphoria engine for next-generation game development.