Don your Nomex firesuit and industrial-grade ear protection: It's time to soak in some nature at 60mph. PopSci staff photographer/madman John Carnett has realized an unholy dream long in the making: an ATV powered entirely by a jet turbine.
And then he took it to the woods and pushed it to the limit; to the edge of logic, control and sanity.
Among the hot new ideas afloat in the world of geoengineering is biochar, a form of charcoal that some say could significantly help in carbon sequestration in the future. Re:char, a fledgling company working out of a corner of a cluttered warehouse in a shared artist loft in Brooklyn, New York, is experimenting with biochar production on a very small scale.
Even though this 'bot was dutifully programmed for each admittedly complex step--far from autonomous--we can dream, can't we, of a cute attendant chugging away with our espresso kit while we read the morning news?
You've successfully tested the limits of how much can fit into a #10 envelope without bursting its seams, but now you're questioning how much postage you need. Sure you could just slap a few of the new 44-cent stamps onto whatever you're sending and be done with it, but that's good money you're throwing away.
Instead, spend just a few bucks now to build a simple magnetic postage scale, newly updated from an original article in the February 1971 issue of Popular Science.
The retro-futuristic design of this skateboard was inspired by the look of rocket ships in old cartoons. Ryan Bavetta used a jigsaw to cut out the sleek deck and then mounted a propeller and 3.7-horsepower engine from a model airplane on the back to power it. A handheld remote controls the engine throttle, which can move the board 25 mph or more wherever he wants to go.
For all he's done and all he's taught you, you'd think dear old Dad would be honored more than one day out of the year. And if you want to get technical, had he not teamed up with mom on that one long-ago DIY project, you wouldn't be reading this right now. So this Father's Day, pay homage to his tinkering spirit with something he'll use in future acts of glorious creation.
Throughout this guide, you'll find a wide selection of tools from free iPhone apps to a budget-busting hammer drill; an oh-so-convenient cordless glue gun and soldering tool; plus a variety of things to help him amp up his environmentalism, his swing, his gut, and his chances of getting a speeding ticket.
By Mike RigsbyPosted 06.10.2009 at 7:29 pm 8 Comments
You're late for work. As you hustle out the front door, the furthest thing from your mind is the afternoon's dentist appointment that you'd scheduled last week. You'd have probably forgotten all about it — if you hadn't thought ahead by programming a home-built device to give you a voice reminder as you pass it on your way out.
Tinkerers have been turning flatbed scanners into cameras for a while, but this version by a Japanese modder is one of the finest I've seen--both in technical execution and the incredible quality of the massive 130-megapixel images it creates.
What you consider solid, liquid or gas depends entirely on where you live. For example, men from cold, cold Mars might build their houses out of ice. Women from Venus, where the average temperature is about 870°F, could bathe in liquid zinc.
We think mercury is a liquid metal, but it's all relative. At one temperature, the mercury atoms arrange themselves into a solid crystal; at another, they flow freely around each other as a liquid. Children from Pluto (like mine, for example) could happily cast their toy soldiers out of mercury, because on that frigid planet it is a solid, malleable metal a lot like tin. Here on temperate Earth, you need a stove to cast tin, but a tank of liquid nitrogen to make mercury figurines.
To coincide with this year's Invention Awards, we've started the National School Inventors Challenge, a contest for students around the country to submit their world-changing ideas and inventions. Here, see engineering students at Miami Coral Park high school putting together plans for a solar-powered bike.