On a visit to Bangladesh in 2011–where an estimated 20 million people are exposed to arsenic in local drinking water–scientist Liangjie Dong worked with a team to teach residents how to use a filtration system he designed that could make the water safe. The technology worked, but it wasn’t self-explanatory: it required training in how to use a special cartridge, and special instructions for how to dispose of it after use.
These cheap paper water filters remove lead, arsenic, and bacteria
More of Today's Solutions
Brazil fines meat producers $64 million over ties to deforested Amazon land
BY THE OPTIMIST DAILY EDITORIAL TEAM In a major environmental crackdown, Brazil's IBAMA fined meat packers and cattle ranchers $64 million for rearing or ...
Read MoreHow to spot a moon ring: a guide to lunar halos and other moonlight phenomena
BY THE OPTIMIST DAILY EDITORIAL TEAM The ring around the moon, also known as the lunar halo, is a breathtaking yet surprisingly common sight ...
Read MoreThe surprising reason you should turn your camera off during Zoom calls
To all of you who have been keeping their cameras off during Zoom calls, well done. You may have simply been trying to hide ...
Read MoreHummingbirds have the widest color range of all birds
Among the different species of birds, hummingbirds are among the most iconic and distinct in the skies. These unique creatures hover unlike most birds, ...
Read More
