Nanoparticles that glow in water containing deadly germs
Waterborne illnesses, particularly diseases that cause diarrhea, are among the deadliest in the world, killing millions each year. Around a quarter of the world’s population lacks consistent access to clean water, putting them at constant risk of exposure to disease-causing waterborne viruses and bacteria. Some researchers are working to develop nanoparticles that light up or change color when they come in contact with dangerous viruses in drinking water. The particles could be used to coat almost anything, even the inside of a cup, to prevent people from unwittingly drinking contaminated water.