Talk about dedication: Swedish biochemist Petra Wadström spent eleven years developing an easy-to-use solar power water purifier. The purifier can hold ten liters of water and takes about three hours of direct sunlight to create potable water.

For the hundreds of millions of people without reliable access to clean water supplies, Wadström’s purifier could be a lifesaver.

Chelsea (171 Posts)

Chelsea is a former newspaper reporter who has spent the past few years teaching English in Poland, Finland and Japan. When she wasn't teaching or writing, Chelsea was traveling Europe and Asia, sampling spicy street food along the way.