
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.


Online Content Director: Suzanne LaBarre | Email
Senior Editor: Paul Adams | Email
Associate Editor: Dan Nosowitz | Email
Assistant Editor: Colin Lecher | Email
Assistant Editor: Rose Pastore | Email
Contributing Writers:
Rebecca Boyle | Email
Kelsey D. Atherton | Email
Francie Diep | Email
Shaunacy Ferro | Email
The first prototype, a pure carbon-fiber model, weighed just 19 pounds (about 15 pounds less than a plastic kayak) and was easier to maneuver, thanks to the rigid frame. But it proved no match for river rocks, which cracked the hull. In three subsequent prototypes, Wave Sport added Kevlar strips to reinforce the parts of the kayak that take the most abuse. The resulting six-foot-two-inch boat — the first carbon-fiber freestyle kayak made in the U.S. — weighs a bantam 20 pounds but is sturdy enough to survive a hotdog paddler’s acrobatics.
it's wonderfull.You have to look at http://www.tamders.com/ okey ?