US scientists say they have invented a tiny water-purifying device, which is about the size of a person’s fingertip and harnesses light to kill harmful bacteria. In laboratory experiments, the ultra thin 1cm-by-2cm miniature tablet-like device, which was placed in a water container, killed 99.9 percent of bacteria in just 20 minutes, according to a study published last month in the Nature Nanotechnology journal by a team from Stanford University in California. “Researchers have always…
US scientists test tiny water purifier powered by light
More of Today's Solutions
Oslo’s quiet revolution: how electric construction sites are changing the game
BY THE OPTIMIST DAILY EDITORIAL TEAM Imagine walking past a bustling construction site and hearing… almost nothing. In Oslo, that’s becoming the new normal. ...
Read MoreDIY toothpaste: a simple, eco-friendly guide to sparkling teeth
BY THE OPTIMIST DAILY EDITORIAL TEAM Are you tired of reaching for the same old toothpaste tube every morning? Making your own toothpaste not ...
Read MoreThe Rockefeller Christmas Tree gets a charitable new life after the holidays
We once shared how a tiny owl was rescued from the branches of the Rockefeller Christmas Tree. Now we have more good news as ...
Read MoreRobot fish repairs itself with microplastics it collects
Microplastics are one of the most pervasive environmental and health issues of our time. And environmental engineers and researchers are working nonstop to address ...
Read More
