EcoModo - The Best of TreeHugger

Build your own solar tracker, or go small with a DIY solar charger in an Altoids tin, a brilliant new way to measure sharks, the ultimate bike lock design, a bench that tweets your pic, and more!

Make A Cheap & Easy Solar USB Charger With An Altoids Tin

The craftster behind the very popular $3 solar-powered emergency radio is back with a new awesome project: a cheap solar battery charger with a USB plug.

Bike Lock Concept Makes Bike Impossible to Ride If Stolen

A bike lock concept by designer Jaryn Miller has caught our eye as a clever way to keep thieves at bay. If someone tries to steal this bike, they'll be in for an unpleasant surprise.

Crowd-sourced Drinking Fountain App Coming to Android Phones

A new project between Google and the Pacific Institute will help you find public drinking fountains in a jiff using your smart phone.

The New Way to Measure Sharks Without Becoming Lunch

Researchers have come up with a smart new way to measure the size of sharks while maintaining a safe distance from the predators.

Public Beach Tweets to Make Open Spaces More Social

Every time someone takes a seat, the bench sends a tweet — complete with photos.

The Bicycle Power Calculator Exposes the Physics of Cycling

A bicycle power calculator that tells you how much energy you need to generate while pedalling your bike, and it even breaks it down between the energy needed to overcome rolling resistance, air friction, mechanical losses, etc.

Chairs Made From Old Computers Offer Interactive Seating

A series of furniture, including chairs and a table, have been fashioned from junked hardware... and they couldn't be more interesting. They're even interactive!

Innards of iPhone 4 Shown Off with New Transparent Back Panel

Show off the guts of your favorite gadget.

How to Build a DIY Solar Tracker (Video)

Usually solar trackers are prohibitively expensive… unless you DIY it with this instructional video.

Watch a PEM Fuel Cell Power Up MP3 Player (Video)

Element14 has a video showing a PEM fuel cell powering an MP3 player. But, exactly what is PEM technology, how does it work, and why do we care if it powers a small electronic device?