This article describes a new device created for the purification of water. The device, which was developed at Stanford University, utilizes the sun’s UV rays in order to naturally purify the water. The device is about half the size of a postage stamp, and is able to eliminate 99.999% of the harmful bacteria from the water within 20 minutes.

Key Takeaways:

• the researchers created a small device that when dropped in water uses solar energy to disinfect it in just minutes.
• When sunlight hits it, it forms hydrogen peroxide and other bacteria-killing chemicals that are able to eliminate 99.999 percent of the bacteria present in the water sample in only 20 minutes.
• While the device does disinfect the water, it’s not able to remove any chemical pollutants

“One of the major crises facing the world is access to clean drinking water.”

https://www.treehugger.com/gadgets/tiny-black-rectangle-disinfects-water-minutes.html