Green Innovations we should see more often

The Internet is full of ideas, concepts and actual green inventions. They all seem really practical and environmentally friendly that we wish we would see more of them, and actually have them in real life.

Here are some of those cool innovations.

1. A charger that charges your gadget from the heat of hot drinks and the cold of, well, cold drinks!!

2. Wanna keep in shape, be green and charge your gadgets? Well, time for some workout!

3. A Subway ticket machine that gives you the ticket when you recycle! 

4. Recharge your batteries via USB! Cool!