Ready, player one?
Make sure you're secure before leaving the house.
Get amped up to learn the watts and volts about refueling your devices.
Get the most juice in the shortest time
Give those batteries long, healthy lives.
Bring a dead electric screwdriver back to life in seconds by adding quick-charging super capacitors.
But please, please don't try it
Ann Makosinski is our young inventor of the year
It's as easy as one, two, three inexpensive accessories.
Turn a regular flashlight into a powerful LED torch that will run for years
Be ready for anything life throws your way.
Find the fitness tracker to help hit your goals.
Charge your gadgets with a piece of fruit and some pocket change
Build a device that lets you charge batteries for your cellphone or music player just by taking a stroll
The BC-900 not only re-juices your AAs, it gives you the vital stats about them
To create beautiful electrical-charge patterns like this, you could use a giant particle accelerator. But shag carpeting will also do just fine. Watch how Lichtenberg figures are made in our amazing video
Steps to reducing your battery anxiety
The Canadian Road Hawk
In his free time during high school, Adam Munich built himself a machine to see inside other machines
CanÂ¿IÂ¿Plug In MyÂ¿Prius?
Keep your gadgets powered up with an easy mod to a messenger bagâ€”and help from the sun
Charge electronics on the go with a bike-mounted USB hub.
Don't break any gadgets.
Prepare to face the great outdoors.
Make charging easier.
A case in which the conventional wisdom is scientifically inaccurate
A 180-pound, 8.5-foot-long Frankencycle
Your literary empire starts here.
Defend your information.
Force them to pay attention.
Just say, "Bye, son."
A grocery basket that can blaze down the aisles at 30 mph
The new software measures varying light phenomena, accounting for distortions from the Earth's atmosphere and any stray clouds.
And how to adjust them.
Do you know what an IP rating is?
Going high-tech with your home security, and even adding automation, doesn't have to break the bank.
Add a camera to your scope for cheap astrophotography
This year's must-have convergence device gets a lot cooler with a few essential extras.
Use your computer for days even if you're away from civilization.
Car tags like E-ZPass aren't only read at tollbooths. Follow these instructions to sound the alarm whenever (and wherever) yours is scanned.
Don't hit the road without them
Who needs cash or cards?
Turn on, tune in, sit back.
How to stay entertained without having to pay.
Head for the country and point your camera toward the sky.
Top-quality software that costs nothing.
Get out the door faster.
Stay on top of household chores.
Give new life to your leftovers.
With the lights out, it's less dangerous.
Stop and smell the tomatoes. No, seriously, it helps.
Explore the Galaxy.
The art of shrinking coins using copper coils, magnetic fields and enough energy to power a small city.
Powered by environmentally conscious energy sources, these DIY vehicles put traditional gas guzzlers to shame
Installing free software turns your MP3 player into a musical instrument
Five mistakes that will sap your money and your sanity.
Do you know where your money is going?
Take charge of your privacy.
Sell, digitize, organize, and clean up your junk.
Don't hide your digital photos away. Put 'em online for everyone to see, without spending a dime
How to send a folded flyer screaming 100 feet or more: Just add a motor-and a lot of juice
A number of companies want to help you convert your hybrid
Inspired by the season, a grill built from a V8 engine, a lawnmower powered by the sun, and setting off fireworks remotely
Turn a backpack into a portable, solar-powered Wi-Fi hotspot, and share a high-speed connection anywhere
Doghouse comes complete with a solar heating system, LED lights and a Wi-Fi security camera
How one New York bartender fused alcohol and marijuana forever
Keep an eye on the weather.
Release your inner Spielberg.
Step away from the phone.
Can you hack an electric scooter to make it go faster?
A homemade vertical turbine can supply big power at little cost
Got a four- or five-year-old PC laptop youâ€™ve dismissed as useless? Bring it back to life with these tips, then use it as a spare Web and e-mail station in the kitchen or kidsâ€™ room
You don't have to be a tech jock to make a sleek and silent home-theater PC, but everyone will think you are
Surf the Web from the hammock out back (or the park down the block) with this solar-powered Wi-Fi extender
Set your own "dingtone" for a customized doorbell
Meet PopSci's resident mad scientist Theodore Gray, master of concoctions and combustions
These "surfboards" make surface-mount prototyping "boardacious," dude
A British engineer builds a half-ton, 1,000-horse drag-racing bike with the power of a monster truck
An insole restores communication between the brain and injured feet
An eco-minded couple hits the road in a DIY covered wagon--with a bonus outdoor cat porch.
Untether your vintage cans using a cheap wireless hack.
Give your granny several states away the tech support she deserves—from a smartphone.
A pack of hacked go-karts that re-creates a classic videogame.
How the same trick that recovers energy in a hybrid car can help you survive the zombie apocalypse
You can barely tell the difference between it and the real thing.
Hardware has always lagged behind software in the open source movement. But one website is beginning to change that.
Makeshift tools for the post-apocalypse
The dead shall shine again
It beats pinching them
Scoop snow from the comfort of home.