When it comes to disposal, it is hard to safely dispose of old e-waste such as broken computers, mobile phones, and other digital goods. As life becomes more digital, more e-waste has been created, leaving many landfills and areas rich with heavy metals and chemicals that can contaminate the land and nearby water. One teenager is hoping to change all of that.

18-year-old Perry Alagappan has designed a new heavy metal filter that can remove 99% of heavy metals from water. The filter is built from graphite nanotubes and can be rinsed with a vinegar concentrate to be reused. In an altruistic move, Alagappan refuses to patent his invention so that the world can use the design for free. For the full story on this filter, click here:: Texas teenager creates $20 water purifier to tackle toxic e-waste pollution