When it comes to buying gadgets I believe that there are 3 key technologies that help you save the world. Before I get to that, what do I mean by save the world, because that's a big claim right?
Saving the world to me means:
Less reliance on batteries - I don't know about you, but I'm over batteries. I know we need them but I feel that technology has not progressed as fast as it could. Batteries are also toxic and require special disposal methods. If the reliance on batteries is decreased there will be a decrease in toxic waste.
Economical use of free resources - If you are going to by a gadget you might as well make use of the free resources that are available such as, wind, water, the sun and human energy. All these resources can power gadgets and incredibly, are free!
It goes without saying that if you're powering your gadgets for free, you're saving a huge amount in gadget running costs.
Less reliance on batteries and the economical use of exiting free resources means I can buy gadgets and feel good about helping the world at the same time.
So what are the technologies that help you save the world?
Wind Up Technology
This technology involves making use of human muscle power to wind a hand crank and create electricity. This electricity can be used to charge other devices, create light or power radios. Free, easy, energy.
LED Technology
Not only are LED's extremely efficient, they have incredible lifetimes, often in the 10s of thousands of hours. LEDs are cheap to create due to improved LED manufacturing technology and combined with extremely long service life which make the LED a cheap and long lasting eco friendly technology
Solar Technology
What's better than free power? Solar technology is only just starting to significantly improve; I believe we are just at the beginning. Currently all sorts of efficient personal solar chargers are available. Devices can be topped up, or completely recharged for only the cost of the solar charger.
As we are a planet of "consumers" it's hard to completely stop buying gadgets. However, if we focus on gadgets that use renewable free energy we are slowly changing the behaviour of gadget purchasing for the better. When you combine wind up technology, LED technology and Solar technology into a gadget your not only saving the world, you saving money and reducing the reliance on nasty batteries.
Justin is the founder and contributor at